port test_server_metadata and test_server_personality into v3 part2

this port test_server_metadata into v3. the personality has been removed
in nova v3 api, and the absolute has been removed from limits api, so
just remove them.

Change-Id: Ia366cfc15b3ebea787b1aa24c8197e4e01567d4c
Merge "port test_server_metadata and test_server_personality into v3 part2"