LU-15253 mdt: object version race

LU-15253 mdt: object version race

MDT object version should be obtained under LDLM lock.

Change-Id: Ib828a4065d56e80cbe488a3fdfc6c5da808b20d0
HPE-bug-id: LUS-9280
Signed-off-by: Andriy Skulysh <andriy.skulysh@hpe.com>
Signed-off-by: Shaun Tancheff <shaun.tancheff@hpe.com>
Reviewed-by: Alexander Boyko <alexander.boyko@hpe.com>
Reviewed-by: Andrew Perepechko <andrew.perepechko@hpe.com>
Reviewed-by: Vitaly Fertman <vitaly.fertman@hpe.com>
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/45620
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>