LU-4659 mdd: rename forgets updating target linkea

LU-4659 mdd: rename forgets updating target linkea

MDD rename forgets updating target LinkEA if target is not unlinked,
which will cause LinkEA inconsistency.

Lustre-commit: 2d6315fbeab3c815efa3ea7b953ff34e6f3fa3fc
Lustre-change: http://review.whamcloud.com/9745

Signed-off-by: Lai Siyao <lai.siyao@intel.com>
Signed-off-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: Fan Yong <fan.yong@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Change-Id: I348c58e4a11e7b0ba31befef8922dfe47cee755c
Reviewed-on: http://review.whamcloud.com/10409
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>