LU-3931 hsm: reprocess LDLM resource in mdt_hsm_release()

LU-3931 hsm: reprocess LDLM resource in mdt_hsm_release()

In mdt_hsm_release() manually reprocess the LDLM resource (the file
being released) after cancelling the lease (exclusive open lock on the
same file).

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Change-Id: Idc2333bc14432f24ef45d5f5d59c8518717c99c2
Reviewed-on: http://review.whamcloud.com/7621
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>