engine : Autorecovering hosts shows host uid and not host name

When a host is being autorecovered the host name is not
displayed in the engine.log. It would be useful for
debugging if the host name is listed when we recover a host

Change-Id: I4473b3c8a4605b733df1bee1295a6721f6e96199
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=888355
Signed-off-by: Ravi Nori <rnori@redhat.com>