Create api+scenario tests for pools

This patch implements pool tests for the Octavia
Tempest Plugin.

Change-Id: Id8dadfa292a698273240a4d3513288053e7c62c5
Story: 2001387
Task: 5969
diff --git a/octavia_tempest_plugin/clients.py b/octavia_tempest_plugin/clients.py
index 396fa7d..27ebb89 100644
--- a/octavia_tempest_plugin/clients.py
+++ b/octavia_tempest_plugin/clients.py
@@ -19,6 +19,8 @@
     listener_client)
 from octavia_tempest_plugin.services.load_balancer.v2 import (
     loadbalancer_client)
+from octavia_tempest_plugin.services.load_balancer.v2 import (
+    pool_client)
 
 CONF = config.CONF
 SERVICE_TYPE = 'load-balancer'
@@ -33,3 +35,5 @@
             self.auth_provider, SERVICE_TYPE, CONF.identity.region)
         self.listener_client = listener_client.ListenerClient(
             self.auth_provider, SERVICE_TYPE, CONF.identity.region)
+        self.pool_client = pool_client.PoolClient(
+            self.auth_provider, SERVICE_TYPE, CONF.identity.region)