_sync_compute_node should log host and nodename

ResourceTracker:_sync_compute_node logs the host name when it
creates or updates the record for a compute node. However, with
baremetal, one compute_node (host) may actually manage many
separate physical nodes, identified by unique nodenames.

This patch updates the LOG.info calls to include the nodename.

Change-Id: I69c66b84394b2a740a7ca9d2781015a7e1ff9998
Merge "_sync_compute_node should log host and nodename"