Adding stretch cluster scenarios to downstream

[SrinivasaBharath]

Description

Please include Automation development guidelines. Source of Test case - New Feature/Regression Test/Close loop of customer BZs

Checklist:

• [x] Create a test case in Polarion reviewed and approved.
• [ ] Create a design/automation approach doc. Optional for tests with similar tests already automated.
• [ ] Review the automation design
• [x] Implement the test script and perform test runs
• [x] Submit PR for code review and approve
• [ ] Update Polarin Test with Automation script details and update automation fields
• [ ] If automation is part of Close loop, update BZ flag qe-test_coverage “+” and link Polarion test

[SrinivasaBharath]

Log files in pulpito- 1.http://pulpito.ceph.redhat.com/skanta-2020-09-26_05:29:42-rados:downstream:singleton-master-distro-basic-clara/ 2.http://pulpito.ceph.redhat.com/skanta-2020-09-26_19:31:28-rados:downstream:singleton-master-distro-basic-clara/ 3.http://pulpito.ceph.redhat.com/skanta-2020-09-27_04:05:04-rados:downstream:singleton-master-distro-basic-clara/

[rakeshgm]

@SrinivasaBharath can you finish the tasks in the checklist, i think this is a new test case right.

[rakeshgm]

@SrinivasaBharath any update on the checklist activities.

[rakeshgm]

also please squash commits.

[SrinivasaBharath]

Polarion Test case- https://polarion.engineering.redhat.com/polarion/#/project/CEPH/workitem?id=CEPH-83573653 Updated the check list.