[solum] 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: I318e5d93b5dce5ba3e9dcc6536f2a5f2f22932bf

deliverables/train/python-solumclient.yaml

@@ -8,6 +8,10 @@ releases:
     projects:
       - repo: openstack/python-solumclient
         hash: b3e7f9dd4edf032074b5f67a3a92a6c8cfafa8fa
+  - version: train-em
+    projects:
+      - repo: openstack/python-solumclient
+        hash: b3e7f9dd4edf032074b5f67a3a92a6c8cfafa8fa
 branches:
   - location: 2.9.0
     name: stable/train

deliverables/train/solum-dashboard.yaml

@@ -23,6 +23,10 @@ releases:
     projects:
       - repo: openstack/solum-dashboard
         hash: 4f0d8b0d247a83a976c27b88ec8708dd99ac95bc
+  - version: train-em
+    projects:
+      - repo: openstack/solum-dashboard
+        hash: 4f0d8b0d247a83a976c27b88ec8708dd99ac95bc
 branches:
   - name: stable/train
     location: 3.0.0.0rc1

deliverables/train/solum.yaml

@@ -19,6 +19,10 @@ releases:
       - repo: openstack/solum
         hash: 24fa3f5e3d05162599748dc86419dadc0c71f346
     diff-start: 6.0.0
+  - version: train-em
+    projects:
+      - repo: openstack/solum
+        hash: 24fa3f5e3d05162599748dc86419dadc0c71f346
 branches:
   - name: stable/train
     location: 7.0.0.0rc1