release keystonemiddleware for caracal-1 milestone

This is a library release for keystonemiddleware 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.

$ git log --oneline --no-merges 10.4.1..9ade074
53b4cb2 External OAuth2.0 Authorization Server Support
de15a61 External OAuth2.0 Authorization Server Support
7033768 auth_token: fix issue when data in cache gets corrupted

Change-Id: Iaa5381e2398150cab56d1c8b0a3673d84e909197
Signed-off-by: Hervé Beraud <hberaud@redhat.com>

deliverables/caracal/keystonemiddleware.yaml

@@ -6,3 +6,8 @@ team: keystone
 type: library
 repository-settings:
   openstack/keystonemiddleware: {}
+releases:
+  - version: 10.5.0
+    projects:
+      - repo: openstack/keystonemiddleware
+        hash: 9ade074c9b665926e939c9b6b45bebb1e307b2f1