Consider interface and region options with OSC

The --os-interface/OS_INTERFACE and --os-region-name/OS_REGION_NAME
options were considered by aodh CLI but ignored when using the OSC
integration.

Change-Id: Iad6f28d942626aa4117020d0d15df1c084a58560

aodhclient/osc.py

@@ -39,7 +39,9 @@ def make_client(instance):
         API_VERSIONS)
     # NOTE(sileht): ensure setup of the session is done
     instance.setup_auth()
-    return aodh_client(session=instance.session)
+    return aodh_client(session=instance.session,
+                       interface=instance.interface,
+                       region_name=instance.region_name)
 
 
 def build_option_parser(parser):