LU-5564 mdt: skip permission check for close

LU-5564 mdt: skip permission check for close

When closing a file normally, skip the permission check
for open handle gives us permission.

Change-Id: I74271eb83cdd807940cb6ba37ede05fa9f9751ce
Signed-off-by: Hongchao Zhang <hongchao.zhang@intel.com>
Reviewed-on: http://review.whamcloud.com/15534
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>