Use tempest.lib's base module for network clients

There is the same base modules on both tempest.lib and tempest.services.
tempest.lib is stable module now, and we can switch to use the module
for the code cleanup.

Partially implements blueprint migrate-service-clients-to-tempest-lib

Change-Id: I8d2b8e963b0dca9f3a3f70120c7c6d95313d022d
diff --git a/tempest/services/network/json/base.py b/tempest/services/network/json/base.py
deleted file mode 100644
index a6ada04..0000000
--- a/tempest/services/network/json/base.py
+++ /dev/null
@@ -1,71 +0,0 @@
-#    Licensed under the Apache License, Version 2.0 (the "License"); you may
-#    not use this file except in compliance with the License. You may obtain
-#    a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-#    License for the specific language governing permissions and limitations
-#    under the License.
-
-from oslo_serialization import jsonutils as json
-from six.moves.urllib import parse as urllib
-
-from tempest.lib.common import rest_client
-
-
-class BaseNetworkClient(rest_client.RestClient):
-
-    """Base class for Tempest REST clients for Neutron.
-
-    Child classes use v2 of the Neutron API, since the V1 API has been
-    removed from the code base.
-    """
-
-    version = '2.0'
-    uri_prefix = "v2.0"
-
-    def list_resources(self, uri, **filters):
-        req_uri = self.uri_prefix + uri
-        if filters:
-            req_uri += '?' + urllib.urlencode(filters, doseq=1)
-        resp, body = self.get(req_uri)
-        body = json.loads(body)
-        self.expected_success(200, resp.status)
-        return rest_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 rest_client.ResponseBody(resp, body)
-
-    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 = json.loads(body)
-        self.expected_success(200, resp.status)
-        return rest_client.ResponseBody(resp, body)
-
-    def create_resource(self, uri, post_data):
-        req_uri = self.uri_prefix + uri
-        req_post_data = json.dumps(post_data)
-        resp, body = self.post(req_uri, req_post_data)
-        body = json.loads(body)
-        self.expected_success(201, resp.status)
-        return rest_client.ResponseBody(resp, body)
-
-    def update_resource(self, uri, post_data):
-        req_uri = self.uri_prefix + uri
-        req_post_data = json.dumps(post_data)
-        resp, body = self.put(req_uri, req_post_data)
-        body = json.loads(body)
-        self.expected_success(200, resp.status)
-        return rest_client.ResponseBody(resp, body)
diff --git a/tempest/services/network/json/network_client.py b/tempest/services/network/json/network_client.py
index d1cbc87..bcef36b 100644
--- a/tempest/services/network/json/network_client.py
+++ b/tempest/services/network/json/network_client.py
@@ -15,7 +15,7 @@
 from tempest import exceptions
 from tempest.lib.common.utils import misc
 from tempest.lib import exceptions as lib_exc
-from tempest.services.network.json import base
+from tempest.lib.services.network import base
 
 
 class NetworkClient(base.BaseNetworkClient):
diff --git a/tempest/services/network/json/routers_client.py b/tempest/services/network/json/routers_client.py
index 8958bf9..18442cf 100644
--- a/tempest/services/network/json/routers_client.py
+++ b/tempest/services/network/json/routers_client.py
@@ -10,7 +10,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from tempest.services.network.json import base
+from tempest.lib.services.network import base
 
 
 class RoutersClient(base.BaseNetworkClient):
diff --git a/tempest/services/network/json/security_group_rules_client.py b/tempest/services/network/json/security_group_rules_client.py
index b2ba5b2..944eba6 100644
--- a/tempest/services/network/json/security_group_rules_client.py
+++ b/tempest/services/network/json/security_group_rules_client.py
@@ -10,7 +10,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from tempest.services.network.json import base
+from tempest.lib.services.network import base
 
 
 class SecurityGroupRulesClient(base.BaseNetworkClient):