[oswin-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: Idee706732d9f3a9222b6eac9f6e5facf5b321a00

deliverables/train/oswin-tempest-plugin.yaml

@@ -12,3 +12,7 @@ releases:
     projects:
       - repo: openstack/oswin-tempest-plugin
         hash: a291a1b4710e5632416d7db4c241dfe9228c6426
+  - version: train-last
+    projects:
+      - repo: openstack/oswin-tempest-plugin
+        hash: 59e6a14d01dda304c7d11fda1d35198f25799d6c

deliverables/xena/oswin-tempest-plugin.yaml

@@ -8,3 +8,8 @@ repository-settings:
   openstack/oswin-tempest-plugin: {}
 team: winstackers
 type: tempest-plugin
+releases:
+  - version: 1.3.0
+    projects:
+      - repo: openstack/oswin-tempest-plugin
+        hash: 59e6a14d01dda304c7d11fda1d35198f25799d6c