Bump Ironic API version to 1.22 when creating the Ironic client

Due to how microversioning works in the Ironic client, it is not possible
to use API features introduced in API version 1.10 and later from Mistral,
as the default version is 1.9 (mid-Liberty). This change bumps the required
API version to 1.22 (Newton final).

See the following link for the full API version history:
http://docs.openstack.org/developer/ironic/dev/webapi-version-history.html

Change-Id: I1c605fc00efe5fe8956d6547ea5e85e6e1172c9b

mistral/actions/openstack/actions.py

@@ -52,6 +52,13 @@ LOG = log.getLogger(__name__)
 CONF = cfg.CONF
 
 
+IRONIC_API_VERSION = '1.22'
+"""The default microversion to pass to Ironic API.
+
+1.22 corresponds to Newton final.
+"""
+
+
 class NovaAction(base.OpenStackAction):
     def _create_client(self):
         ctx = context.ctx()
@@ -373,7 +380,8 @@ class IronicAction(base.OpenStackAction):
         return self._get_client_class()(
             ironic_endpoint.url,
             token=ctx.auth_token,
-            region_name=ironic_endpoint.region
+            region_name=ironic_endpoint.region,
+            os_ironic_api_version=IRONIC_API_VERSION
         )
 
     @classmethod

releasenotes/notes/ironic-api-newton-9397da8135bb97b4.yaml

@@ -0,0 +1,10 @@
+---
+features:
+  - It is now possible to use the Bare metal (Ironic) API features introduced
+    in API version 1.10 to 1.22.
+upgrade:
+  - Required Ironic API version was bumped to '1.22' (corresponding to Ironic
+    6.2.0 - Newton final release).
+  - Due to the default Ironic API version change to '1.22', new bare metal
+    nodes created with 'node_create' action appears in "enroll" provision state
+    instead of "available". Please update your workflows accordingly.