[freezer-tempest-plugin] Tag train-last

Train branch is in Extended Maintenance now[1]. Tempest and
tempest plugins are branchless which means master version of
Tempest and its plugins is used to test the supported stable
branches.

Once any stable branch is moved to EM state then, Tempest and
its plugins compatible tag[2] needs to be released so that we can
keep testing the EM stable branches with that tag once master
Tempest and its plugins are not compatible[3].

Tagging 'train-last'[4] as well as a new version also with same hash.

[1] https://releases.openstack.org/train/index.html
[2] https://docs.openstack.org/tempest/latest/stable_branch_support_policy.html
[3] https://docs.openstack.org/tempest/latest/tempest_and_plugins_compatible_version_policy.html
[4] https://docs.openstack.org/project-team-guide/stable-branches.html#extended-maintenance

Change-Id: Ieab529798e0e456663b8b576b654d670ecb4cf56

deliverables/train/freezer-tempest-plugin.yaml

@@ -13,3 +13,7 @@ releases:
     projects:
       - repo: openstack/freezer-tempest-plugin
         hash: 79d9ad5ed11289ba588261b1e9992bfed1a9a254
+  - version: train-last
+    projects:
+      - repo: openstack/freezer-tempest-plugin
+        hash: cccf158daa36cbd32c6f8817772a17596b9f4193

deliverables/xena/freezer-tempest-plugin.yaml

@@ -9,3 +9,8 @@ repository-settings:
     tarball-base: freezer_tempest_plugin
 team: freezer
 type: tempest-plugin
+releases:
+  - version: 1.3.0
+    projects:
+      - repo: openstack/freezer-tempest-plugin
+        hash: cccf158daa36cbd32c6f8817772a17596b9f4193