[winstackers] Transition Ussuri to EM

This transition the ussuri 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.

Change-Id: I1cf717c432dc83334bd9b7d9df6b44518671c057

deliverables/ussuri/compute-hyperv.yaml

@@ -23,6 +23,10 @@ releases:
     projects:
       - repo: openstack/compute-hyperv
         hash: 4ad05407b199fc844ba4716f6e5e62f453374343
+  - version: ussuri-em
+    projects:
+      - repo: openstack/compute-hyperv
+        hash: 4ad05407b199fc844ba4716f6e5e62f453374343
 branches:
   - name: stable/ussuri
     location: 10.0.0.0rc1

deliverables/ussuri/networking-hyperv.yaml

@@ -24,6 +24,10 @@ releases:
     projects:
       - repo: openstack/networking-hyperv
         hash: e5b0ddbb1a9701c1661047293ec50042a63f7d89
+  - version: ussuri-em
+    projects:
+      - repo: openstack/networking-hyperv
+        hash: e5b0ddbb1a9701c1661047293ec50042a63f7d89
 branches:
   - name: stable/ussuri
     location: 8.0.0.0rc1

deliverables/ussuri/os-win.yaml

@@ -19,6 +19,10 @@ releases:
     projects:
       - repo: openstack/os-win
         hash: 18793de7eb16569bc99171f74259bc81239c9681
+  - version: ussuri-em
+    projects:
+      - repo: openstack/os-win
+        hash: 18793de7eb16569bc99171f74259bc81239c9681
 branches:
   - name: stable/ussuri
     location: 5.0.1