[barbican-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: I0af4b15e95d2b2cbcec01bd3f99ca578d0006740

deliverables/train/barbican-tempest-plugin.yaml

@@ -13,3 +13,7 @@ releases:
     projects:
       - repo: openstack/barbican-tempest-plugin
         hash: a226433e778d4996b8c4f4e8fee9c3c3b8ea3ad4
+  - version: train-last
+    projects:
+      - repo: openstack/barbican-tempest-plugin
+        hash: 25e16b8a0f36fbfee8fcccd6926682f0958bcc8d

deliverables/xena/barbican-tempest-plugin.yaml

@@ -8,4 +8,9 @@ repository-settings:
   openstack/barbican-tempest-plugin:
     tarball-base: barbican_tempest_plugin
 team: barbican
+releases:
+  - version: 1.4.0
+    projects:
+      - repo: openstack/barbican-tempest-plugin
+        hash: 25e16b8a0f36fbfee8fcccd6926682f0958bcc8d
 type: tempest-plugin