Use tempest.common.identity.identity_utils for project management

This uses identity_utils from tempest.common.identity for
project creation/deletion in non-identity tests:

    A client that abstracts v2 and v3 identity operations.

    This can be used for creating and tearing down projects in tests.
    It should not be used for testing identity features.

This is a common pattern in Tempest and should be used in Patrole, too.

Change-Id: Id87294bd19c7abd92d202b5ba6b49e4aac6c7e42
2 files changed