features/locks: Add lk-owner checks in entrylk

For backward compatibility of entry-self-heal we need
entrylks to be accepted by same lk-owner and same client.
This patch introduces these changes.

Change-Id: I67004cc5e657ba5ac09ceefbea823afdf06929e0
BUG: 1168189
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/9125
Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>