Rename "Rbac Flag" to "Rbac testing" in skip exceptions

This is a trivial change. Since "Rbac Flag" CONF param
was changed in a previous patch, "Rbac testing" is more
appropriate as a ``skipException`` message.

Change-Id: Iee448b44f9aa06a20f75324967f5eca0b372acc5
diff --git a/patrole_tempest_plugin/tests/api/image/rbac_base.py b/patrole_tempest_plugin/tests/api/image/rbac_base.py
index 2a45ccb..a825c71 100644
--- a/patrole_tempest_plugin/tests/api/image/rbac_base.py
+++ b/patrole_tempest_plugin/tests/api/image/rbac_base.py
@@ -28,7 +28,7 @@
         super(BaseV1ImageRbacTest, cls).skip_checks()
         if not CONF.rbac.enable_rbac:
             raise cls.skipException(
-                "%s skipped as RBAC Flag not enabled" % cls.__name__)
+                "%s skipped as RBAC testing not enabled" % cls.__name__)
 
     @classmethod
     def setup_clients(cls):
@@ -47,7 +47,7 @@
         super(BaseV2ImageRbacTest, cls).skip_checks()
         if not CONF.rbac.enable_rbac:
             raise cls.skipException(
-                "%s skipped as RBAC Flag not enabled" % cls.__name__)
+                "%s skipped as RBAC testing not enabled" % cls.__name__)
 
     @classmethod
     def setup_clients(cls):
diff --git a/patrole_tempest_plugin/tests/api/network/rbac_base.py b/patrole_tempest_plugin/tests/api/network/rbac_base.py
index 629f0ca..d033174 100644
--- a/patrole_tempest_plugin/tests/api/network/rbac_base.py
+++ b/patrole_tempest_plugin/tests/api/network/rbac_base.py
@@ -30,7 +30,7 @@
         super(BaseNetworkRbacTest, cls).skip_checks()
         if not CONF.rbac.enable_rbac:
             raise cls.skipException(
-                "%s skipped as RBAC Flag not enabled" % cls.__name__)
+                "%s skipped as RBAC testing not enabled" % cls.__name__)
 
     @classmethod
     def setup_clients(cls):