api: remove useless get_actions() in consoles

This code is never called and refers to an non existent class.

Change-Id: Ia999d550315bf10dc7589f43e67e2fbf0d94501d
Remove instance_uuids argument to _schedule

The instance_uuids argument to _schedule is pointless. The UUIDs are
already in the request_spec's 'instance_uuids' key.

Change-Id: I434c0be3ecd95dc5da7762770546c5f1274f985f
Make cells rpc bdm_update_or_create_at_top use BDM objects

We were sending SQLAlchemy objects previously, which is bad practice
since they work only with Rabbit rpc backend. Inter-cell RPC calls will
still use dicts.

Change-Id: I28ee5f914914b85be577291edef6c285f055be5a
Merge "Make cells rpc bdm_update_or_create_at_top use BDM objects"
Merge "Remove instance_uuids argument to _schedule"
Merge "api: remove useless get_actions() in consoles"