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/tests/test_base.py b/octavia_tempest_plugin/tests/test_base.py
index 73843b7..9862e12 100644
--- a/octavia_tempest_plugin/tests/test_base.py
+++ b/octavia_tempest_plugin/tests/test_base.py
@@ -104,6 +104,7 @@
         cls.lb_mem_subnet_client = cls.os_roles_lb_member.subnets_client
         cls.mem_lb_client = cls.os_roles_lb_member.loadbalancer_client
         cls.mem_listener_client = cls.os_roles_lb_member.listener_client
+        cls.mem_pool_client = cls.os_roles_lb_member.pool_client
 
     @classmethod
     def resource_setup(cls):