Release ironic-lib 2.16.2 and create stable/stein

Strictly speaking, the new release only contains CI changes, but
we want them on stable/stein, so requesting a release anyway.

Change-Id: I7d024c0d8cd146ba43f367ec43e549270dca74ec

deliverables/stein/ironic-lib.yaml

@@ -25,3 +25,10 @@ releases:
       - hash: 653b59a09d93af736ac02733de05045097bb2b3d
         repo: openstack/ironic-lib
     version: 2.16.1
+  - projects:
+      - hash: 20205755800c67a424d2e135d9085f68de4d8e67
+        repo: openstack/ironic-lib
+    version: 2.16.2
+branches:
+  - name: stable/stein
+    location: 2.16.2