glance-api: add dependency on message bus

without this the api starts up in a non-working state, the bootstrap
job then runs and give is images which are stuck queued

Change-Id: Ie3e03620618b1c46882c05b3a5ef8745c78af6a3

glance/values.yaml

@@ -322,6 +322,8 @@ dependencies:
           service: oslo_db
         - endpoint: internal
           service: identity
+        - endpoint: internal
+          service: oslo_messaging
     bootstrap:
       jobs:
         - glance-storage-init