Add Xena deliverable files

Only few projects have been detected as unreleased during Wallaby:

- deliverables/xena/cinderlib.yaml
- deliverables/xena/release-test.yaml
- deliverables/xena/openstack-ansible-roles.yaml
- deliverables/xena/kolla-ansible.yaml
- deliverables/xena/kayobe.yaml

They are mostly trailing projects, so, at this point they hadn't yet
been released.

Only our testing project remain really undelivered during Wallaby, however,
I decided to keep it around during Xena, either to allow us to test
urgent things or to convert it to JS testing project for example (to
catch the yarn/nodejs issues proactively by example).

Change-Id: I446061df0474ba36e39d44a4a70017b742856c11

deliverables/xena/murano-tempest-plugin.yaml

@@ -0,0 +1,10 @@
+---
+include-pypi-link: false
+launchpad: murano
+release-model: cycle-with-intermediary
+stable-branch-type: none
+release-type: python-pypi
+repository-settings:
+  openstack/murano-tempest-plugin: {}
+team: murano
+type: tempest-plugin