engine: CreateVDSCommand Logging message does not report NIC devices

Network and other devices are not written to the log file
in CreateVDSCommand.

Change-Id: I9aa08e4064c62d034fe769b0df65f20fc6b4fd8f
Bug-Url: https://bugzilla.redhat.com/1036885
Signed-off-by: Ravi Nori <rnori@redhat.com>