Verify the response attributes of 'startup_host' API

This patch verifies the response attributes of 'startup_host' API.
The response body format of v2:
{
    "host": "57f5de2fa5b44f14974a4f50b9ffcbf8",
    "power_action": "startup"
}

The response body format of v3:
{
    "host": {
        "host": "4b392b27930343bbaa27fd5d8328a564",
        "power_action": "startup"
    }
}

Partially implements blueprint nova-api-attribute-test
Change-Id: If73daa85c374ce2ae8187cdc7f4929c8647ebe66
diff --git a/tempest/api_schema/compute/v2/hosts.py b/tempest/api_schema/compute/v2/hosts.py
new file mode 100644
index 0000000..add5bb5
--- /dev/null
+++ b/tempest/api_schema/compute/v2/hosts.py
@@ -0,0 +1,27 @@
+# Copyright 2014 NEC Corporation.  All rights reserved.
+#
+#    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.
+
+body = {
+    'type': 'object',
+    'properties': {
+        'host': {'type': 'string'},
+        'power_action': {'enum': ['startup']}
+    },
+    'required': ['host', 'power_action']
+}
+
+startup_host = {
+    'status_code': [200],
+    'response_body': body
+}
diff --git a/tempest/api_schema/compute/v3/hosts.py b/tempest/api_schema/compute/v3/hosts.py
new file mode 100644
index 0000000..9731d4b
--- /dev/null
+++ b/tempest/api_schema/compute/v3/hosts.py
@@ -0,0 +1,26 @@
+# Copyright 2014 NEC Corporation.  All rights reserved.
+#
+#    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 tempest.api_schema.compute.v2 import hosts
+
+startup_host = {
+    'status_code': [200],
+    'response_body': {
+        'type': 'object',
+        'properties': {
+            'host': hosts.body
+        },
+        'required': ['host']
+    }
+}
diff --git a/tempest/services/compute/json/hosts_client.py b/tempest/services/compute/json/hosts_client.py
index 0130f27..d346bc4 100644
--- a/tempest/services/compute/json/hosts_client.py
+++ b/tempest/services/compute/json/hosts_client.py
@@ -16,6 +16,7 @@
 import urllib
 
 from tempest.api_schema.compute import hosts as schema
+from tempest.api_schema.compute.v2 import hosts as v2_schema
 from tempest.common import rest_client
 from tempest import config
 
@@ -66,6 +67,7 @@
 
         resp, body = self.get("os-hosts/%s/startup" % str(hostname))
         body = json.loads(body)
+        self.validate_response(v2_schema.startup_host, resp, body)
         return resp, body['host']
 
     def shutdown_host(self, hostname):
diff --git a/tempest/services/compute/v3/json/hosts_client.py b/tempest/services/compute/v3/json/hosts_client.py
index bcb9d36..0748d5c 100644
--- a/tempest/services/compute/v3/json/hosts_client.py
+++ b/tempest/services/compute/v3/json/hosts_client.py
@@ -16,6 +16,7 @@
 import urllib
 
 from tempest.api_schema.compute import hosts as schema
+from tempest.api_schema.compute.v3 import hosts as v3_schema
 from tempest.common import rest_client
 from tempest import config
 
@@ -66,6 +67,7 @@
 
         resp, body = self.get("os-hosts/%s/startup" % str(hostname))
         body = json.loads(body)
+        self.validate_response(v3_schema.startup_host, resp, body)
         return resp, body['host']
 
     def shutdown_host(self, hostname):