[swift] Transition Wallaby to EM

This transition the wallaby branch to extended maintenance.
Changes for bugfixes and things the team deems important are
still encouraged, but there will no longer be official releases
off of the branch.

Please +1 if the team is ready for us to proceed with this
transition, or -1 if there are any final backports currently in
flight that we should wait for. For the latter case, please
update the patch with the new commit hash after doing a final
release to get those changes out so we know to proceed with the
transition.

The transition deadline is November 2nd, 2022.

Change-Id: Idd665176f9d2de75b3c1145422477f4828eb6e16

deliverables/wallaby/python-swiftclient.yaml

@@ -15,6 +15,10 @@ releases:
     projects:
       - repo: openstack/python-swiftclient
         hash: 06b36ae0e2ee6054162bfb1d9f3cdda39eacbad5
+  - version: wallaby-em
+    projects:
+      - repo: openstack/python-swiftclient
+        hash: 06b36ae0e2ee6054162bfb1d9f3cdda39eacbad5
 branches:
   - name: stable/wallaby
     location: 3.11.1

deliverables/wallaby/swift.yaml

@@ -10,6 +10,10 @@ releases:
     projects:
       - repo: openstack/swift
         hash: c6a64036651e18f3d7d0715c5d4876257aaa0e6f
+  - version: wallaby-em
+    projects:
+      - repo: openstack/swift
+        hash: c6a64036651e18f3d7d0715c5d4876257aaa0e6f
 branches:
   - name: stable/wallaby
     location: 2.27.0