Improve octavia tempest plugin configuration

To run octavia tempest plugin some configuration need to
set in tempestconf file. If octavia service is enabled
then configuration region, enable_provider_drivers will
set automatically.

Added tripleo-ci-centos-8-scenario010-standalone job in
check and gate list.

Added tests for list_drivers and post_configuration.

Change-Id: Ic719f83f4fb9a330fc64ef46144e0b0b39c3a7d5
Signed-off-by: Amol Kahat <amolkahat@gmail.com>

.zuul.yaml

@@ -20,6 +20,7 @@
         - tripleo-ci-centos-8-scenario002-standalone
         - tripleo-ci-centos-8-standalone
         - refstack-client-devstack-tempestconf
+        - tripleo-ci-centos-8-scenario010-standalone
     gate:
       jobs:
         - openstack-tox-pep8
@@ -31,6 +32,7 @@
         - tripleo-ci-centos-8-scenario002-standalone
         - tripleo-ci-centos-8-standalone
         - refstack-client-devstack-tempestconf
+        - tripleo-ci-centos-8-scenario010-standalone
     experimental:
       jobs:
         - python-tempestconf-tempest-devstack-demo-train

config_tempest/services/octavia.py

@@ -14,10 +14,10 @@
 # under the License.
 
 from config_tempest.services.base import VersionedService
+import json
 
 
 class LoadBalancerService(VersionedService):
-
     def set_versions(self):
         super(LoadBalancerService, self).set_versions(top_level=False)
 
@@ -34,6 +34,23 @@ class LoadBalancerService(VersionedService):
     def get_codename():
         return 'octavia'
 
+    def list_drivers(self):
+        """List lbaas drivers"""
+        body = self.do_get(self.service_url + '/v2/lbaas/providers')
+        body = json.loads(body)
+        names = [
+            '{p[name]}:{p[description]}'.format(p=i) for i in body['providers']
+        ]
+        return names
+
     def post_configuration(self, conf, is_service):
+        if not conf.has_option('auth', 'tempest_roles') \
+                or conf.get('auth', 'tempest_roles') in ['', None]:
+            conf.set('load_balancer', 'member_role', 'member')
+        else:
             conf.set('load_balancer', 'member_role',
                      conf.get('auth', 'tempest_roles').split(',')[0])
+        conf.set('load_balancer', 'region', conf.get('identity', 'region'))
+        conf.set('load_balancer',
+                 'enabled_provider_drivers',
+                 ','.join(self.list_drivers()))

config_tempest/tests/base.py

@@ -31,7 +31,6 @@ logging.disable(logging.CRITICAL)
 
 
 class BaseConfigTempestTest(base.BaseTestCase):
-
     """Test case base class for all config_tempest unit tests"""
 
     FAKE_V3_VERSIONS = (
@@ -105,7 +104,6 @@ class BaseConfigTempestTest(base.BaseTestCase):
 
 
 class BaseServiceTest(base.BaseTestCase):
-
     """Test case base class for all api_discovery unit tests"""
 
     FAKE_TOKEN = "s6d5f45sdf4s564f4s6464sdfsd514"
@@ -210,6 +208,17 @@ class BaseServiceTest(base.BaseTestCase):
             }
         }
     )
+    FAKE_LBAAS_PROVIDERS = (
+        {
+            "providers": [{
+                "name": "amphora",
+                "description": "The Octavia Amphora driver."
+            }, {
+                "name": "octavia",
+                "description": "Deprecated alias of the Octavia driver."
+            }]
+        }
+    )
     FAKE_STORAGE_EXTENSIONS = (
         {
             "formpost": {},

config_tempest/tests/services/test_octavia.py

@@ -0,0 +1,59 @@
+# Copyright 2020 Red Hat, Inc.
+# 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 unittest import mock
+
+from config_tempest.services.octavia import LoadBalancerService
+from config_tempest.tests.base import BaseConfigTempestTest
+from config_tempest.tests.base import BaseServiceTest as bst
+
+
+class TestOctaviaService(BaseConfigTempestTest):
+    def setUp(self):
+        super(TestOctaviaService, self).setUp()
+        self.conf = self._get_conf("v2", "v3")
+        self.clients = self._get_clients(self.conf)
+        self.Service = LoadBalancerService("ServiceName",
+                                           "ServiceType",
+                                           bst.FAKE_URL + "v2.0/",
+                                           bst.FAKE_TOKEN,
+                                           disable_ssl_validation=False)
+        self.Service.client = bst.FakeServiceClient(
+            services={"services": [{"name": "octavia", "enabled": True}]}
+        )
+        self.conf.set("identity", "region", "regionOne")
+        bst._fake_service_do_get_method(self, bst.FAKE_LBAAS_PROVIDERS)
+
+    def test_list_drivers(self):
+        expected_resp = [
+            "amphora:The Octavia Amphora driver.",
+            "octavia:Deprecated alias of the Octavia driver.",
+        ]
+        providers = self.Service.list_drivers()
+        self.assertCountEqual(providers, expected_resp)
+
+    @mock.patch("config_tempest.services.services.Services.is_service")
+    def test_octavia_service_post_configuration(self, mock_is_service):
+        mock_is_service.return_value = True
+        self.Service.post_configuration(self.conf, mock_is_service)
+        self.assertEqual(self.conf.get("load_balancer", "member_role"),
+                         "member")
+        self.assertEqual(self.conf.get("load_balancer", "region"),
+                         "regionOne")
+        self.assertEqual(self.conf.get("load_balancer",
+                                       "enabled_provider_drivers"),
+                         ("amphora:The Octavia Amphora driver.,"
+                          "octavia:Deprecated alias of the Octavia driver."),
+                         )