LU-9117 tests: SKIP sanity/129 on older MDS versions

LU-9117 tests: SKIP sanity/129 on older MDS versions

LU-3531 esp the change,
"LU-3531 mdt: delete striped directory" is not present
on 2.5.x esp on tags less 2.5.56.

Thus sanity/129 test needs to be skipped in interop
with such MDS versions.

Test-Parameters: testlist=sanity
Signed-off-by: Parinay Kondekar <Parinay.Kondekar@seagate.com>
Change-Id: I3f1b92ed5ef5b8011bee8b2ef77c7c5b0db197b2
Reviewed-on: https://review.whamcloud.com/25440
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: James Nunez <james.a.nunez@intel.com>
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>