Release mistral-lib for Ussuri milestone 1

This picks up unreleased changes in mistral-lib.
The cycle-with-intermediary deliverables are good to release frequently
whenever there are functional changes to be released. Feel free to -1
this patch if there are additional changes that should be included in
this release or if it is not a good time to do it.

Change-Id: I25d8943227abbcf0b95624fd9c08d54c348e5041
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>

deliverables/ussuri/mistral-lib.yaml

@@ -6,3 +6,8 @@ team: mistral
 type: library
 repository-settings:
   openstack/mistral-lib: {}
+releases:
+  - version: 1.3.0
+    projects:
+      - repo: openstack/mistral-lib
+        hash: fb1e34de6806033f8aee72fc7c4cf973c915574d