[keystone] Transition Train to EM

This transition the train 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: Ic142de61e2be97f7e1236d57f4db222e56d11ec6

deliverables/train/keystone.yaml

@@ -66,6 +66,10 @@ releases:
     projects:
       - repo: openstack/keystone
         hash: c65455965aec303b55bc76388314a2b96a2bc12c
+  - version: train-em
+    projects:
+      - repo: openstack/keystone
+        hash: c65455965aec303b55bc76388314a2b96a2bc12c
 branches:
   - name: stable/train
     location: 16.0.0.0rc1

deliverables/train/keystoneauth.yaml

@@ -46,6 +46,10 @@ releases:
     projects:
       - repo: openstack/keystoneauth
         hash: 8dc7366e7667149c33d26a1b1a05a10c3ac47f26
+  - version: train-em
+    projects:
+      - repo: openstack/keystoneauth
+        hash: 8dc7366e7667149c33d26a1b1a05a10c3ac47f26
 branches:
   - location: 3.17.1
     name: stable/train

deliverables/train/keystonemiddleware.yaml

@@ -19,6 +19,10 @@ releases:
     projects:
       - repo: openstack/keystonemiddleware
         hash: 0a65b1420799e7c7f8736e9f6c234f755ab5ac6b
+  - version: train-em
+    projects:
+      - repo: openstack/keystonemiddleware
+        hash: 0a65b1420799e7c7f8736e9f6c234f755ab5ac6b
 branches:
   - name: stable/train
     location: 7.0.1

deliverables/train/pycadf.yaml

@@ -11,6 +11,10 @@ releases:
     projects:
       - repo: openstack/pycadf
         hash: d113c1564d49d93451d9330955e8a42b7db04149
+  - version: train-em
+    projects:
+      - repo: openstack/pycadf
+        hash: d113c1564d49d93451d9330955e8a42b7db04149
 branches:
   - name: stable/train
     location: 2.10.0

deliverables/train/python-keystoneclient.yaml

@@ -15,6 +15,10 @@ releases:
       - hash: 79f150f962a2300f4644ba735b4f28e337035251
         repo: openstack/python-keystoneclient
     version: 3.21.0
+  - version: train-em
+    projects:
+      - repo: openstack/python-keystoneclient
+        hash: 79f150f962a2300f4644ba735b4f28e337035251
 branches:
   - location: 3.21.0
     name: stable/train