LU-18030 tests: Add a test to ensure permissions copy on nfs

LU-18030 tests: Add a test to ensure permissions copy on nfs

Also ensure no empty POSIX ACL is created.

Test-Parameters: trivial testlist=parallel-scale-nfsv4,parallel-scale-nfsv3
Change-Id: I85d37f8eebd17d6acdb67c552fec2caa79dbd39c
Signed-off-by: Oleg Drokin <green@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/56176
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Sebastien Buisson <sbuisson@ddn.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>