Add stable/zed jobs on master gate

As zed is released, we should add its job on master
gate to keep branchless tempest plugins compatible
to stable branch.

Also, remove stable/wallaby jobs given that wallaby went
to Extended Maintenance on 2022-11-07T10:52:23+00:00

Ref: Tempest plugins guide for stable branch testing:
- https://docs.openstack.org/tempest/latest/stable_branch_testing_policy.html

Change-Id: I1708ab9829b147e6ca1a2d549ea130bf08b3cc38
1 file changed