Refactor fake data for projects and users

Move fake data structures into tests/identity/fakes.py

Change-Id: I3169de7bfb09c1399bea88f1540be6728b17c3a6
Add Identity v2 role and service tests

Change-Id: Ie8bf41c491d97b0292a2b86bdc9b7580989a7f97
Merge branch 'refactor-fakes' into dt-test
Merge branch 'test-service-v2' into dt-test