Release ceilometer for stable/xena

This release picks up new commits to ceilometer since
the last release from stable/xena.

This is being proposed as a convenience to help make sure stable
changes are being released. If the team is good with this going out,
please respond with a +1 to let the release team know it is OK to
proceed.

If it is not wanted at this time, or if there are more changes that
would be good to get merged before doing a stable release, please
leave a -1 with a comment with what the team would prefer. We can
then either abandon this patch, or wait for an update with a new
commit hash to use instead.

$ git log --oneline --no-merges 17.0.1..320f50fb
320f50fb Add centos9s jobs
f075c701 Fix OutgoingBytesDeltaPollster sample name
0b2a9e31 Remove lingering queue declaration
274e5155 Fix broken test_discovery_with_libvirt_error
2bc8b261 Debug log libvirt metadata version fails

Signed-off-by: Hervé Beraud <hberaud@redhat.com>
Change-Id: I1284a94eb69645db23834025f459168704cab095

deliverables/xena/ceilometer.yaml

@@ -19,6 +19,10 @@ releases:
     projects:
       - repo: openstack/ceilometer
         hash: c724307a080469e25950e25093b3e70b92794415
+  - version: 17.0.2
+    projects:
+      - repo: openstack/ceilometer
+        hash: 320f50fbdf5d91e10259db87e5e97fae7ba43163
 branches:
   - name: stable/xena
     location: 17.0.0.0rc1