Merge test_update_server_name_in_stop_state

test_update_server_name_in_stop_state can be merged with
test_update_server_name, so we can save one create_server,
and the code logic is still clear enough.

test_update_server_name_in_stop_state is not used in defcore,
so it can be safely removed.

Change-Id: I687322e96d82c4c705b5654e9d1995234124d9f7
1 file changed