Updated openstack/openstack
Project: openstack/tempest  6384e5df9f513239f84ff80efbc9cb0e6400fb55

Inherit V2 API's flavors tests from V3 tests

There is a lot of copy&paste test code for Nova v2/v3 API tests.
In addition, we need to add many checks for API test coverage.
As the result, we should apply the same changes to v2 and v3 tests.

This patch reuse the test code of flavors APIs between V2 and V3
Inheriting the V2 flavors API's test from V3 tests.

Partially implements blueprint nova-api-test-inheritance

Change-Id: I85463baec7af1e4e8bcc6310804fd15c1958d7ed