LU-14642 flr: allow layout version update from client/MDS

LU-14642 flr: allow layout version update from client/MDS

Client write request always carries its layout version so
that OFD can reject the request if the carried layout version
is a stale one.

This patch makes OFD allow layout version change request from
client as well as MDS. And during resync write, all OST objects
will get layout version updated.

Signed-off-by: Bobi Jam <bobijam@whamcloud.com>
Change-Id: I655044f69a4509a2b0cfe99f86de2ce4ee846979
Reviewed-on: https://review.whamcloud.com/45443
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Alex Zhuravlev <bzzz@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>