Inherit V2 keypair API's tests from V3 tests

There is a lot of copy&paste test code for Nova v2/v3 API tests.
In addition, we need to add many checks for API test coverage.
As the result, we should apply the same changes to v2 and v3 tests.

This patch reuse the test code between V2 and V3 Keypair APIs
Inheriting the V2 Keypair API's test from V3 tests.

Partially implements blueprint nova-api-test-inheritance

Change-Id: Ibe170a00e27619827678a1bbe104623ca24a81a3
diff --git a/tempest/api/compute/keypairs/test_keypairs.py b/tempest/api/compute/keypairs/test_keypairs.py
index 67fafed..01979c0 100644
--- a/tempest/api/compute/keypairs/test_keypairs.py
+++ b/tempest/api/compute/keypairs/test_keypairs.py
@@ -18,16 +18,17 @@
 from tempest import test
 
 
-class KeyPairsTestJSON(base.BaseV2ComputeTest):
+class KeyPairsV3Test(base.BaseComputeTest):
+
+    _api_version = 3
 
     @classmethod
     def setUpClass(cls):
-        super(KeyPairsTestJSON, cls).setUpClass()
+        super(KeyPairsV3Test, cls).setUpClass()
         cls.client = cls.keypairs_client
 
     def _delete_keypair(self, keypair_name):
         resp, _ = self.client.delete_keypair(keypair_name)
-        self.assertEqual(202, resp.status)
 
     def _create_keypair(self, keypair_name, pub_key=None):
         resp, body = self.client.create_keypair(keypair_name, pub_key)
@@ -46,7 +47,6 @@
             # as the keypair dicts from list API doesn't have them.
             keypair.pop('private_key')
             keypair.pop('user_id')
-            self.assertEqual(200, resp.status)
             key_list.append(keypair)
         # Fetch all keypairs and verify the list
         # has all created keypairs
@@ -69,7 +69,6 @@
         # Keypair should be created, verified and deleted
         k_name = data_utils.rand_name('keypair-')
         resp, keypair = self._create_keypair(k_name)
-        self.assertEqual(200, resp.status)
         private_key = keypair['private_key']
         key_name = keypair['name']
         self.assertEqual(key_name, k_name,
@@ -108,7 +107,6 @@
                    "XcPojYN56tI0OlrGqojbediJYD0rUsJu4weZpbn8vilb3JuDY+jws"
                    "snSA8wzBx3A/8y9Pp1B nova@ubuntu")
         resp, keypair = self._create_keypair(k_name, pub_key)
-        self.assertEqual(200, resp.status)
         self.assertFalse('private_key' in keypair,
                          "Field private_key is not empty!")
         key_name = keypair['name']
@@ -117,5 +115,9 @@
                          "to the requested name!")
 
 
-class KeyPairsTestXML(KeyPairsTestJSON):
+class KeyPairsV2TestJSON(KeyPairsV3Test):
+    _api_version = 2
+
+
+class KeyPairsV2TestXML(KeyPairsV2TestJSON):
     _interface = 'xml'
diff --git a/tempest/api/compute/v3/keypairs/test_keypairs.py b/tempest/api/compute/v3/keypairs/test_keypairs.py
deleted file mode 100644
index 668a295..0000000
--- a/tempest/api/compute/v3/keypairs/test_keypairs.py
+++ /dev/null
@@ -1,117 +0,0 @@
-# Copyright 2012 OpenStack Foundation
-# 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.compute import base
-from tempest.common.utils import data_utils
-from tempest import test
-
-
-class KeyPairsV3Test(base.BaseV3ComputeTest):
-
-    @classmethod
-    def setUpClass(cls):
-        super(KeyPairsV3Test, cls).setUpClass()
-        cls.client = cls.keypairs_client
-
-    def _delete_keypair(self, keypair_name):
-        resp, _ = self.client.delete_keypair(keypair_name)
-        self.assertEqual(204, resp.status)
-
-    def _create_keypair(self, keypair_name, pub_key=None):
-        resp, body = self.client.create_keypair(keypair_name, pub_key)
-        self.addCleanup(self._delete_keypair, keypair_name)
-        return resp, body
-
-    @test.attr(type='gate')
-    def test_keypairs_create_list_delete(self):
-        # Keypairs created should be available in the response list
-        # Create 3 keypairs
-        key_list = list()
-        for i in range(3):
-            k_name = data_utils.rand_name('keypair-')
-            resp, keypair = self._create_keypair(k_name)
-            # Need to pop these keys so that our compare doesn't fail later,
-            # as the keypair dicts from list API doesn't have them.
-            keypair.pop('private_key')
-            keypair.pop('user_id')
-            self.assertEqual(201, resp.status)
-            key_list.append(keypair)
-        # Fetch all keypairs and verify the list
-        # has all created keypairs
-        resp, fetched_list = self.client.list_keypairs()
-        self.assertEqual(200, resp.status)
-        # We need to remove the extra 'keypair' element in the
-        # returned dict. See comment in keypairs_client.list_keypairs()
-        new_list = list()
-        for keypair in fetched_list:
-            new_list.append(keypair['keypair'])
-        fetched_list = new_list
-        # Now check if all the created keypairs are in the fetched list
-        missing_kps = [kp for kp in key_list if kp not in fetched_list]
-        self.assertFalse(missing_kps,
-                         "Failed to find keypairs %s in fetched list"
-                         % ', '.join(m_key['name'] for m_key in missing_kps))
-
-    @test.attr(type='gate')
-    def test_keypair_create_delete(self):
-        # Keypair should be created, verified and deleted
-        k_name = data_utils.rand_name('keypair-')
-        resp, keypair = self._create_keypair(k_name)
-        self.assertEqual(201, resp.status)
-        private_key = keypair['private_key']
-        key_name = keypair['name']
-        self.assertEqual(key_name, k_name,
-                         "The created keypair name is not equal "
-                         "to the requested name")
-        self.assertTrue(private_key is not None,
-                        "Field private_key is empty or not found.")
-
-    @test.attr(type='gate')
-    def test_get_keypair_detail(self):
-        # Keypair should be created, Got details by name and deleted
-        k_name = data_utils.rand_name('keypair-')
-        resp, keypair = self._create_keypair(k_name)
-        resp, keypair_detail = self.client.get_keypair(k_name)
-        self.assertEqual(200, resp.status)
-        self.assertIn('name', keypair_detail)
-        self.assertIn('public_key', keypair_detail)
-        self.assertEqual(keypair_detail['name'], k_name,
-                         "The created keypair name is not equal "
-                         "to requested name")
-        public_key = keypair_detail['public_key']
-        self.assertTrue(public_key is not None,
-                        "Field public_key is empty or not found.")
-
-    @test.attr(type='gate')
-    def test_keypair_create_with_pub_key(self):
-        # Keypair should be created with a given public key
-        k_name = data_utils.rand_name('keypair-')
-        pub_key = ("ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCs"
-                   "Ne3/1ILNCqFyfYWDeTKLD6jEXC2OQHLmietMWW+/vd"
-                   "aZq7KZEwO0jhglaFjU1mpqq4Gz5RX156sCTNM9vRbw"
-                   "KAxfsdF9laBYVsex3m3Wmui3uYrKyumsoJn2g9GNnG1P"
-                   "I1mrVjZ61i0GY3khna+wzlTpCCmy5HNlrmbj3XLqBUpip"
-                   "TOXmsnr4sChzC53KCd8LXuwc1i/CZPvF+3XipvAgFSE53pCt"
-                   "LOeB1kYMOBaiUPLQTWXR3JpckqFIQwhIH0zoHlJvZE8hh90"
-                   "XcPojYN56tI0OlrGqojbediJYD0rUsJu4weZpbn8vilb3JuDY+jws"
-                   "snSA8wzBx3A/8y9Pp1B nova@ubuntu")
-        resp, keypair = self._create_keypair(k_name, pub_key)
-        self.assertEqual(201, resp.status)
-        self.assertFalse('private_key' in keypair,
-                         "Field private_key is not empty!")
-        key_name = keypair['name']
-        self.assertEqual(key_name, k_name,
-                         "The created keypair name is not equal "
-                         "to the requested name!")