hnodeb: Make HNBGW_ConnHdlr component alive

The several components started by HNBGW_ConnHdlr are already marked as
"alive", but not HNBGW_ConnHdlr. As a result, during test tear down, if
eg. Iuh socket receives a message, it may try to send it to the
HNBGW_ConnHdlr component and will error because it was already killed.

Change-Id: Ibc2587db4563d016841d11de628057bffe36b581
1 file changed