Fix Service CLI to work with Object from Bay changes. Construct
the REST URL for each API since now with Object from Bay changes
its mandatory to pass a bay identifier. Also, in the list
API explicitly pass the bay_ident for which the query is
supposed to be made. The help is also updated so that user
can see provide positional arguments.
For example:
magnum coe-service-show <service> --bay <bay_identifier>
Change-Id: Iefc891dac4113d9b2fd76359f80010a61c194281
Partially-Implements: bp objects-from-bay