Pass ironic microversion through from api_version

If someone sets baremetal_api_version to 1.29 right now, we don't really
do anything with that information. Pass it through to the constructor
for ironicclient in get_legacy_client().

Change-Id: I470fbb8852eac7d5cb35aef549ac591d63f3636f

os_client_config/cloud_config.py

@@ -372,6 +372,12 @@ class CloudConfig(object):
                     constructor_kwargs['endpoint'] = endpoint
             if service_key == 'network':
                 constructor_kwargs['api_version'] = version
+            elif service_key == 'baremetal':
+                if version != '1':
+                    # Set Ironic Microversion
+                    constructor_kwargs['os_ironic_api_version'] = version
+                # Version arg is the major version, not the full microstring
+                constructor_kwargs['version'] = version[0]
             else:
                 constructor_kwargs['version'] = version
         if service_key == 'database':

releasenotes/notes/ironic-microversion-ba5b0f36f11196a6.yaml

@@ -0,0 +1,4 @@
+---
+features:
+  - Add support for passing Ironic microversion to the ironicclient
+    constructor in get_legacy_client.