Additional volume quota set RBAC tests

This PS adds additional volume quota set RBAC tests for the
following endpoints:

  * '/os-quota-sets/{project_id}' [0]
  * '/os-quota-sets/{project_id}/default' [0]
  * '/os-quota-sets/{project_id}' [1]

This PS also adds a clean up to test_update_quota_set
so that the default quotas are reset following test
execution.

[0] https://github.com/openstack/cinder/blob/10a3f4e1c6f21effc79fd309628111c221543e0d/cinder/policies/quotas.py#L28
[1] https://github.com/openstack/cinder/blob/10a3f4e1c6f21effc79fd309628111c221543e0d/cinder/policies/quotas.py#L57

Change-Id: I5a42b8b6235e0a9a5985e8eea4d00f7f614de632
1 file changed