port test_quotas into v3 part2

this ports test_quotas and corresponding clients into nova v3 api.
nova v3 api doesn't support security-groups. Due to the bug 1186354,
currently just remove some related tests, and these tests  will be
rework after that bug is fixed.
this removes the injected_files, injected_file_content_bytes and
injected_file_path_bytes in the v3 tests, because these have been
hidden in nova v3 api.

Partially implements blueprint nova-v3-api-tests

Change-Id: Ic60e33d798275c331e79a4600f1a52b27b79db2a
Merge "port test_quotas into v3 part2"