inspector: fix perms on /var/lib/ironic

This patch fixes permissions on the /var/lib/ironic directory when
it gets used by ironic-inspector. It was previously getting owned as
root:root which causes functional issues with the ironic-conductor
service on the same node which expects it to be ironic:ironic.

Change-Id: I408f791af1d6dca059836efc197d814ec63f942d
Closes-bug: #1746553

docker/services/ironic-inspector.yaml

@@ -91,6 +91,9 @@ outputs:
             - path: /var/log/ironic-inspector
               owner: ironic-inspector:ironic-inspector
               recurse: true
+            - path: /var/lib/ironic
+              owner: ironic:ironic
+              recurse: true
         /var/lib/kolla/config_files/ironic_inspector_dnsmasq.json:
           config_files:
             - source: "/var/lib/kolla/config_files/src/*"