Switch tempest test to zuul3 native, and add proper configuration for events tempest test. Story: 2004549 Task: 28303 Depends-On: https://review.openstack.org/599575 Change-Id: If630fc2e13ed4a81bb7b74c4238d1e28c78490d7
!Parts of code taken from monasca-api and monasca-log-api! Also create a dummy implementataion for version endpoint so that the deployment can be tested. Story: 2001112 Task: 4808 Change-Id: Ic35f6388c34c4d4c1198401a1c6972b802a54c67