Release ovsdbapp for stable/xena

This release picks up new commits to ovsdbapp 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 1.12.2..8202d53
8202d53 Don't force_reconnect() on unhandled Idl exception
1b04058 Fix logging exception while handling transaction exception
fc62ae2 Fix TRY_AGAIN handling

Signed-off-by: Hervé Beraud <hberaud@redhat.com>
Change-Id: Ibe211c52df9f113848f80632359b791afe14d489

deliverables/xena/ovsdbapp.yaml

@@ -26,6 +26,10 @@ releases:
     projects:
       - repo: openstack/ovsdbapp
         hash: 4d4402ce06b070a3bc0391aa9caf66505af8dc78
+  - version: 1.12.3
+    projects:
+      - repo: openstack/ovsdbapp
+        hash: 8202d53fd9d972c7385bb93a392dbba2c1d9aa3b
 branches:
   - name: stable/xena
     location: 1.12.0