diff --git a/tempest/common/cred_provider.py b/tempest/common/cred_provider.py
index fa80d65..2b7e0db 100644
--- a/tempest/common/cred_provider.py
+++ b/tempest/common/cred_provider.py
@@ -101,12 +101,13 @@
     def __init__(self, identity_version=None, name=None,
                  network_resources=None):
         """A CredentialProvider supplies credentials to test classes.
-        :param identity_version If specified it will return credentials of the
-                                corresponding identity version, otherwise it
-                                uses auth_version from configuration
-        :param name Name of the calling test. Included in provisioned
-                    credentials when credentials are provisioned on the fly
-        :param network_resources Network resources required for the credentials
+        :param identity_version: If specified it will return credentials of the
+                                 corresponding identity version, otherwise it
+                                 uses auth_version from configuration
+        :param name: Name of the calling test. Included in provisioned
+                     credentials when credentials are provisioned on the fly
+        :param network_resources: Network resources required for the
+                                  credentials
         """
         self.name = name or "test_creds"
         self.identity_version = identity_version or CONF.identity.auth_version
diff --git a/tempest/common/utils/linux/remote_client.py b/tempest/common/utils/linux/remote_client.py
index 6d22b9b..93c2c10 100644
--- a/tempest/common/utils/linux/remote_client.py
+++ b/tempest/common/utils/linux/remote_client.py
@@ -72,8 +72,7 @@
             return output.split()[1]
 
     def get_number_of_vcpus(self):
-        command = 'cat /proc/cpuinfo | grep processor | wc -l'
-        output = self.exec_command(command)
+        output = self.exec_command('grep -c processor /proc/cpuinfo')
         return int(output)
 
     def get_partitions(self):
diff --git a/tempest/scenario/test_volume_boot_pattern.py b/tempest/scenario/test_volume_boot_pattern.py
index 1731c48..d321e85 100644
--- a/tempest/scenario/test_volume_boot_pattern.py
+++ b/tempest/scenario/test_volume_boot_pattern.py
@@ -47,7 +47,7 @@
         vol_name = data_utils.rand_name('volume-origin')
         return self.create_volume(name=vol_name, imageRef=img_uuid)
 
-    def _boot_instance_from_volume(self, vol_id, keypair):
+    def _boot_instance_from_volume(self, vol_id, keypair, security_group):
         # NOTE(gfidente): the syntax for block_device_mapping is
         # dev_name=id:type:size:delete_on_terminate
         # where type needs to be "snap" if the server is booted
@@ -56,12 +56,10 @@
             'device_name': 'vda',
             'volume_id': vol_id,
             'delete_on_termination': '0'}]
-        self.security_group = self._create_security_group()
-        security_groups = [{'name': self.security_group['name']}]
         create_kwargs = {
             'block_device_mapping': bd_map,
             'key_name': keypair['name'],
-            'security_groups': security_groups
+            'security_groups': [{'name': security_group['name']}]
         }
         return self.create_server(image='', create_kwargs=create_kwargs)
 
@@ -134,12 +132,12 @@
     @test.services('compute', 'volume', 'image')
     def test_volume_boot_pattern(self):
         keypair = self.create_keypair()
-        self.security_group = self._create_security_group()
+        security_group = self._create_security_group()
 
         # create an instance from volume
         volume_origin = self._create_volume_from_image()
         instance_1st = self._boot_instance_from_volume(volume_origin['id'],
-                                                       keypair)
+                                                       keypair, security_group)
 
         # write content to volume on instance
         ssh_client_for_instance_1st = self._ssh_to_server(instance_1st,
@@ -151,7 +149,7 @@
 
         # create a 2nd instance from volume
         instance_2nd = self._boot_instance_from_volume(volume_origin['id'],
-                                                       keypair)
+                                                       keypair, security_group)
 
         # check the content of written file
         ssh_client_for_instance_2nd = self._ssh_to_server(instance_2nd,
@@ -163,8 +161,9 @@
 
         # create a 3rd instance from snapshot
         volume = self._create_volume_from_snapshot(snapshot['id'])
-        instance_from_snapshot = self._boot_instance_from_volume(volume['id'],
-                                                                 keypair)
+        instance_from_snapshot = (
+            self._boot_instance_from_volume(volume['id'],
+                                            keypair, security_group))
 
         # check the content of written file
         ssh_client = self._ssh_to_server(instance_from_snapshot, keypair)
@@ -176,15 +175,16 @@
 
 
 class TestVolumeBootPatternV2(TestVolumeBootPattern):
-    def _boot_instance_from_volume(self, vol_id, keypair):
-        bdms = [{'uuid': vol_id, 'source_type': 'volume',
-                 'destination_type': 'volume', 'boot_index': 0,
-                 'delete_on_termination': False}]
-        self.security_group = self._create_security_group()
-        security_groups = [{'name': self.security_group['name']}]
+    def _boot_instance_from_volume(self, vol_id, keypair, security_group):
+        bd_map_v2 = [{
+            'uuid': vol_id,
+            'source_type': 'volume',
+            'destination_type': 'volume',
+            'boot_index': 0,
+            'delete_on_termination': False}]
         create_kwargs = {
-            'block_device_mapping_v2': bdms,
+            'block_device_mapping_v2': bd_map_v2,
             'key_name': keypair['name'],
-            'security_groups': security_groups
+            'security_groups': [{'name': security_group['name']}]
         }
         return self.create_server(image='', create_kwargs=create_kwargs)
diff --git a/tempest/services/network/json/network_client.py b/tempest/services/network/json/network_client.py
index 5f85199..cc9399e 100644
--- a/tempest/services/network/json/network_client.py
+++ b/tempest/services/network/json/network_client.py
@@ -85,31 +85,23 @@
 
         return _list
 
-    def _deleter(self, resource_name):
-        def _delete(resource_id):
-            plural = self.pluralize(resource_name)
-            uri = '%s/%s' % (self.get_uri(plural), resource_id)
-            resp, body = self.delete(uri)
-            self.expected_success(204, resp.status)
-            return service_client.ResponseBody(resp, body)
+    def _delete_resource(self, uri):
+        req_uri = self.uri_prefix + uri
+        resp, body = self.delete(req_uri)
+        self.expected_success(204, resp.status)
+        return service_client.ResponseBody(resp, body)
 
-        return _delete
-
-    def _shower(self, resource_name):
-        def _show(resource_id, **fields):
-            # fields is a dict which key is 'fields' and value is a
-            # list of field's name. An example:
-            # {'fields': ['id', 'name']}
-            plural = self.pluralize(resource_name)
-            uri = '%s/%s' % (self.get_uri(plural), resource_id)
-            if fields:
-                uri += '?' + urllib.urlencode(fields, doseq=1)
-            resp, body = self.get(uri)
-            body = self.deserialize_single(body)
-            self.expected_success(200, resp.status)
-            return service_client.ResponseBody(resp, body)
-
-        return _show
+    def _show_resource(self, uri, **fields):
+        # fields is a dict which key is 'fields' and value is a
+        # list of field's name. An example:
+        # {'fields': ['id', 'name']}
+        req_uri = self.uri_prefix + uri
+        if fields:
+            req_uri += '?' + urllib.urlencode(fields, doseq=1)
+        resp, body = self.get(req_uri)
+        body = self.deserialize_single(body)
+        self.expected_success(200, resp.status)
+        return service_client.ResponseBody(resp, body)
 
     def _create_resource(self, uri, post_data):
         req_uri = self.uri_prefix + uri
@@ -119,24 +111,17 @@
         self.expected_success(201, resp.status)
         return service_client.ResponseBody(resp, body)
 
-    def _updater(self, resource_name):
-        def _update(res_id, **kwargs):
-            plural = self.pluralize(resource_name)
-            uri = '%s/%s' % (self.get_uri(plural), res_id)
-            post_data = self.serialize({resource_name: kwargs})
-            resp, body = self.put(uri, post_data)
-            body = self.deserialize_single(body)
-            self.expected_success(200, resp.status)
-            return service_client.ResponseBody(resp, body)
-
-        return _update
+    def _update_resource(self, uri, post_data):
+        req_uri = self.uri_prefix + uri
+        req_post_data = self.serialize(post_data)
+        resp, body = self.put(req_uri, req_post_data)
+        body = self.deserialize_single(body)
+        self.expected_success(200, resp.status)
+        return service_client.ResponseBody(resp, body)
 
     def __getattr__(self, name):
-        method_prefixes = ["list_", "delete_", "show_", "update_"]
-        method_functors = [self._lister,
-                           self._deleter,
-                           self._shower,
-                           self._updater]
+        method_prefixes = ["list_"]
+        method_functors = [self._lister]
         for index, prefix in enumerate(method_prefixes):
             prefix_len = len(prefix)
             if name[:prefix_len] == prefix:
@@ -148,41 +133,134 @@
         post_data = {'network': kwargs}
         return self._create_resource(uri, post_data)
 
+    def update_network(self, network_id, **kwargs):
+        uri = '/networks/%s' % network_id
+        post_data = {'network': kwargs}
+        return self._update_resource(uri, post_data)
+
+    def show_network(self, network_id, **fields):
+        uri = '/networks/%s' % network_id
+        return self._show_resource(uri, **fields)
+
+    def delete_network(self, network_id):
+        uri = '/networks/%s' % network_id
+        return self._delete_resource(uri)
+
     def create_subnet(self, **kwargs):
         uri = '/subnets'
         post_data = {'subnet': kwargs}
         return self._create_resource(uri, post_data)
 
+    def update_subnet(self, subnet_id, **kwargs):
+        uri = '/subnets/%s' % subnet_id
+        post_data = {'subnet': kwargs}
+        return self._update_resource(uri, post_data)
+
+    def show_subnet(self, subnet_id, **fields):
+        uri = '/subnets/%s' % subnet_id
+        return self._show_resource(uri, **fields)
+
+    def delete_subnet(self, subnet_id):
+        uri = '/subnets/%s' % subnet_id
+        return self._delete_resource(uri)
+
     def create_port(self, **kwargs):
         uri = '/ports'
         post_data = {'port': kwargs}
         return self._create_resource(uri, post_data)
 
+    def update_port(self, port_id, **kwargs):
+        uri = '/ports/%s' % port_id
+        post_data = {'port': kwargs}
+        return self._update_resource(uri, post_data)
+
+    def show_port(self, port_id, **fields):
+        uri = '/ports/%s' % port_id
+        return self._show_resource(uri, **fields)
+
+    def delete_port(self, port_id):
+        uri = '/ports/%s' % port_id
+        return self._delete_resource(uri)
+
     def create_floatingip(self, **kwargs):
         uri = '/floatingips'
         post_data = {'floatingip': kwargs}
         return self._create_resource(uri, post_data)
 
+    def update_floatingip(self, floatingip_id, **kwargs):
+        uri = '/floatingips/%s' % floatingip_id
+        post_data = {'floatingip': kwargs}
+        return self._update_resource(uri, post_data)
+
+    def show_floatingip(self, floatingip_id, **fields):
+        uri = '/floatingips/%s' % floatingip_id
+        return self._show_resource(uri, **fields)
+
+    def delete_floatingip(self, floatingip_id):
+        uri = '/floatingips/%s' % floatingip_id
+        return self._delete_resource(uri)
+
     def create_metering_label(self, **kwargs):
         uri = '/metering/metering-labels'
         post_data = {'metering_label': kwargs}
         return self._create_resource(uri, post_data)
 
+    def show_metering_label(self, metering_label_id, **fields):
+        uri = '/metering/metering-labels/%s' % metering_label_id
+        return self._show_resource(uri, **fields)
+
+    def delete_metering_label(self, metering_label_id):
+        uri = '/metering/metering-labels/%s' % metering_label_id
+        return self._delete_resource(uri)
+
     def create_metering_label_rule(self, **kwargs):
         uri = '/metering/metering-label-rules'
         post_data = {'metering_label_rule': kwargs}
         return self._create_resource(uri, post_data)
 
+    def show_metering_label_rule(self, metering_label_rule_id, **fields):
+        uri = '/metering/metering-label-rules/%s' % metering_label_rule_id
+        return self._show_resource(uri, **fields)
+
+    def delete_metering_label_rule(self, metering_label_rule_id):
+        uri = '/metering/metering-label-rules/%s' % metering_label_rule_id
+        return self._delete_resource(uri)
+
     def create_security_group(self, **kwargs):
         uri = '/security-groups'
         post_data = {'security_group': kwargs}
         return self._create_resource(uri, post_data)
 
+    def update_security_group(self, security_group_id, **kwargs):
+        uri = '/security-groups/%s' % security_group_id
+        post_data = {'security_group': kwargs}
+        return self._update_resource(uri, post_data)
+
+    def show_security_group(self, security_group_id, **fields):
+        uri = '/security-groups/%s' % security_group_id
+        return self._show_resource(uri, **fields)
+
+    def delete_security_group(self, security_group_id):
+        uri = '/security-groups/%s' % security_group_id
+        return self._delete_resource(uri)
+
     def create_security_group_rule(self, **kwargs):
         uri = '/security-group-rules'
         post_data = {'security_group_rule': kwargs}
         return self._create_resource(uri, post_data)
 
+    def show_security_group_rule(self, security_group_rule_id, **fields):
+        uri = '/security-group-rules/%s' % security_group_rule_id
+        return self._show_resource(uri, **fields)
+
+    def delete_security_group_rule(self, security_group_rule_id):
+        uri = '/security-group-rules/%s' % security_group_rule_id
+        return self._delete_resource(uri)
+
+    def show_extension(self, ext_alias, **fields):
+        uri = '/extensions/%s' % ext_alias
+        return self._show_resource(uri, **fields)
+
     # Common methods that are hard to automate
     def create_bulk_network(self, names):
         network_list = [{'name': name} for name in names]
@@ -303,6 +381,10 @@
         self.expected_success(204, resp.status)
         return service_client.ResponseBody(resp, body)
 
+    def show_quotas(self, tenant_id, **fields):
+        uri = '/quotas/%s' % tenant_id
+        return self._show_resource(uri, **fields)
+
     def create_router(self, name, admin_state_up=True, **kwargs):
         post_body = {'router': kwargs}
         post_body['router']['name'] = name
@@ -352,6 +434,14 @@
         # policy is to restrict enable_snat usage to admins only.
         return self._update_router(router_id, set_enable_snat=False, **kwargs)
 
+    def show_router(self, router_id, **fields):
+        uri = '/routers/%s' % router_id
+        return self._show_resource(uri, **fields)
+
+    def delete_router(self, router_id):
+        uri = '/routers/%s' % router_id
+        return self._delete_resource(uri)
+
     def update_router_with_snat_gw_info(self, router_id, **kwargs):
         """Update a router passing also the enable_snat attribute.
 
@@ -420,6 +510,10 @@
         body = json.loads(body)
         return service_client.ResponseBody(resp, body)
 
+    def show_agent(self, agent_id, **fields):
+        uri = '/agents/%s' % agent_id
+        return self._show_resource(uri, **fields)
+
     def list_routers_on_l3_agent(self, agent_id):
         uri = '%s/agents/%s/l3-routers' % (self.uri_prefix, agent_id)
         resp, body = self.get(uri)
diff --git a/tempest/tests/common/utils/linux/test_remote_client.py b/tempest/tests/common/utils/linux/test_remote_client.py
index b92f306..3ff8e0d 100644
--- a/tempest/tests/common/utils/linux/test_remote_client.py
+++ b/tempest/tests/common/utils/linux/test_remote_client.py
@@ -79,8 +79,7 @@
     def test_get_number_of_vcpus(self):
         self.ssh_mock.mock.exec_command.return_value = '16'
         self.assertEqual(self.conn.get_number_of_vcpus(), 16)
-        self._assert_exec_called_with(
-            'cat /proc/cpuinfo | grep processor | wc -l')
+        self._assert_exec_called_with('grep -c processor /proc/cpuinfo')
 
     def test_get_partitions(self):
         proc_partitions = """major minor  #blocks  name