webadmin: New Data Center "Guide Me" does not reflect hosts presence

DataCenter guide me dialog does not reflect the
presence of hosts. "Configure Host" button appears
under "There are still unconfigured entities:"
even when hosts exist in the datacenter.

Change-Id: I6dbbac65e439f0d58b4104da8e1acb2860e7556c
Bug-Url: https://bugzilla.redhat.com/1023330
Signed-off-by: Ravi Nori <rnori@redhat.com>