release os-ken for caracal-1 milestone

This is a library release for os-ken for the caracal-1
milestone. This repo includes commits that have not been releases for
this cycle yet.

If the team is ready to process with this release, please leave a +1
to indicate we should go ahead with the release.

If the team needs more time for things about to merge, or if there is
some other reason a release should not be done at this time, please
leave a -1 with a comment indicating the status. Then update the patch
with the new commit hash to use once the team is ready to do the
release.

Change-Id: Iee6f9397eee864af92952814938d40ded20e0a0a

deliverables/caracal/os-ken.yaml

@@ -6,3 +6,8 @@ team: neutron
 type: library
 repository-settings:
   openstack/os-ken: {}
+releases:
+  - version: 2.8.0
+    projects:
+      - repo: openstack/os-ken
+        hash: a6f1d2b96ef6121d7b1a838e37090b3f290820ef