LU-18389 tests: skip added sanity/65n checks

LU-18389 tests: skip added sanity/65n checks

Skip checks added at the end of sanity test_65n for MDS versions
that do not have the new layout inheritance behavior.

Test-Parameters: trivial env=ONLY=65n testlist=sanity serverversion=2.14
Fixes: 6e59408f1a ("LU-12130 lod: make pool inheritance policy more consistent")
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Change-Id: Ic7c36801ec6e906d631bc4fc234f1f2b77e9f7dc
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/56786
Reviewed-by: Jian Yu <yujian@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>