Change log level based on node status
Change log level based on node status

While the status node change message is purely informational, it
can contain also failed states transitions.
Moving the level from INFO to ERROR if the provision_state is
'failed' can help in detecting the transition message when
troubleshooting issues.

Change-Id: I79ff7cb8b9d33bc2837d41126fba269a5d4b1cda

openstack/ironic,openstack/ironic