Add the provider service client.

This patch adds the provider service client to the Octavia tempest plugin.

Change-Id: I8ad4f8d5ff5b28ea4c2f2e38d267c91d278c920f
diff --git a/octavia_tempest_plugin/clients.py b/octavia_tempest_plugin/clients.py
index 9b35afd..c1894e3 100644
--- a/octavia_tempest_plugin/clients.py
+++ b/octavia_tempest_plugin/clients.py
@@ -35,6 +35,8 @@
     member_client)
 from octavia_tempest_plugin.services.load_balancer.v2 import (
     pool_client)
+from octavia_tempest_plugin.services.load_balancer.v2 import (
+    provider_client)
 
 CONF = config.CONF
 SERVICE_TYPE = 'load-balancer'
@@ -65,3 +67,5 @@
             self.auth_provider, SERVICE_TYPE, CONF.identity.region)
         self.flavor_client = flavor_client.FlavorClient(
             self.auth_provider, SERVICE_TYPE, CONF.identity.region)
+        self.provider_client = provider_client.ProviderClient(
+            self.auth_provider, SERVICE_TYPE, CONF.identity.region)