LU-14322 tests: skip sanityn 51e for old servers

LU-14322 tests: skip sanityn 51e for old servers

sanityn test 51e was added to Lustre version 2.13.54.148.
When we run version interop testing with servers less than
this version, the test will fail.

We should skip sanityn test 51e if the server version is
less than 2.13.54.148.

Fixes: 3ea729fe82 ("LU-13693 lfs: check early for MDS_OPEN_DIRECTORY")

Test-Parameters: trivial
Test-Parameters: serverversion=2.12.6 serverdistro=el7.9 env=ONLY=51e testlist=sanityn
Signed-off-by: James Nunez <jnunez@whamcloud.com>
Change-Id: Id2f165b275c97c3a1396a0da18a3f254dbe5efa7
Reviewed-on: https://review.whamcloud.com/43969
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Wei Liu <sarah@whamcloud.com>
Reviewed-by: Vikentsi Lapa <vlapa@whamcloud.com>