Updated openstack/openstack
Project: openstack/trove  68a5481911e4a310609fa8b7fe99987e61de5e9c
null
Removes unused "server" from taskmanager

Reasons:
- server has not got any proper used-case in the code.
- Methods for server creation do not need to return server.

Changes
- Removes server from return of server creation methods.
- Removes server from FreshInstanceTasks.create_instance.

Closes-Bug: #1265896
Change-Id: I729992a7f5124d4a6da12835a08b07e38b583f61