Release ironic-lib for stable/train

This release picks up new commits to ironic-lib since
the last release from stable/train.

This is being proposed as a convenience to help make sure stable
changes are being released. If the team is good with this going out,
please respond with a +1 to let the release team know it is OK to
proceed.

If it is not wanted at this time, or if there are more changes that
would be good to get merged before doing a  stable release, please
leave a -1 with a comment with what the team would prefer. We can
then either abandon this patch, or wait for an update with a new
commit hash to use instead.

Change-Id: I62475a28105a90f54f0a193850deaa8567b139f2
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>

deliverables/train/ironic-lib.yaml

@@ -35,6 +35,10 @@ releases:
     projects:
       - repo: openstack/ironic-lib
         hash: 5ffc447bce90874c4d50060644e009a1c27ede75
+  - version: 2.21.2
+    projects:
+      - repo: openstack/ironic-lib
+        hash: cc50dab51325bdf03fd840f7cb69bea1af2ea99f
 branches:
   - name: stable/train
     location: 2.21.0