cliff 2.12.1

This release fixes an issue with newer versions of cmd2 and resolves a
problem with python-tackerclient.

Change-Id: I15550873be4da5dca148292ae586f97c4d4e363c
Related-Bug: #1774418
Related-Bug: #1775548
Signed-off-by: Doug Hellmann <doug@doughellmann.com>

deliverables/rocky/cliff.yaml

@@ -11,3 +11,7 @@ releases:
       - hash: 5e4b3bedc073bed61716ae7e47780d8192a1c34f
         repo: openstack/cliff
     version: 2.12.0
+  - projects:
+      - hash: 92672471a2031a33c2b42218393d3305cdb2239a
+        repo: openstack/cliff
+    version: 2.12.1