LU-18324 tests: skip sanity/205k for older MDS

LU-18324 tests: skip sanity/205k for older MDS

Skip sanity test 205k for MDS < 2.15.64.85 since the test
depends on changes made to the MDS code on the server.

Test-Parameters: trivial testlist=sanity env=ONLY=205k \
  serverversion=2.15.5

Change-Id: I23709c2414b16a3d3a1ec742e7213597183b8f2a
Fixes: ecdcaa3986 ("LU-17512 utils: new ? operator for jobid_name")
Signed-off-by: Jian Yu <yujian@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/56703
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Colin Faber <cfaber@ddn.com>
Reviewed-by: Sarah Liu <sarah@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>