LU-18625 llite: use locks_copy_lock API

LU-18625 llite: use locks_copy_lock API

The RHEL8.[4-7] operates the lockowner ref-count
in fl_copy_lock, So use locks_copy_lock to expand
the fixing scope. Also skip the test case if work
without fix patch in interop enviroment.

Fixes: fb3c3d2052 ("LU-17692 llite: flock work with lockd")
Signed-off-by: Yang Sheng <ys@whamcloud.com>
Change-Id: I038ab25f51062decf2e7846dfdc98bc81339467a
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/57753
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Oleg Drokin <green@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>