
This commit adds tempest functional tests for Manila consistency groups and cgsnapshot objects and actions. By default these tests are enabled; 3rd party CI systems should disabled these tests through the RUN_MANILA_CG_TESTS environment variable if their driver does not support consistency groups. Partially implements bp manila-consistency-groups Change-Id: I3297e02ad53c328f0bfe5245fefdb6af80552b4a