Add Glance client metadata to create Octavia amphora image

- Add admin_identity to create resources from admin user
- Add glance.client.init that makes sure the client is enabled
- Add Glance client metadata for an Octavia amphora image
- Add mine function to retrieve owner ID for a created image

Related prod: PROD-11910

Change-Id: I051f499ca304d270e87b4fe35bddce32e09742f1
diff --git a/keystone/client/core.yml b/keystone/client/core.yml
index 0614f40..2b608ac 100644
--- a/keystone/client/core.yml
+++ b/keystone/client/core.yml
@@ -29,4 +29,11 @@
                   is_admin: true
                   password: ${_param:keystone_admin_password}
                   email: ${_param:admin_email}
-
+        admin_identity:
+          admin:
+            user: admin
+            password: ${_param:keystone_admin_password}
+            project: admin
+            host: ${_param:keystone_service_host}
+            port: 5000
+            region_name: ${_param:openstack_region}