LU-15589 tests: skip sanity test_230s for interop

LU-15589 tests: skip sanity test_230s for interop

Sanity test_230s was added in 2.14.52 but incorrectly checked for
MDS version 2.13.57 for interop, likely because that was the version
present at the time the patch was originally written, but it was
only landed later.

Test-Parameters: trivial serverversion=2.14.0 testlist=sanity env=ONLY=230s
Fixes: 65e3e4050ec5 ("LU-14366 mdt: lfs mkdir should return -EEXIST if exists")
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Change-Id: I5d046ad224a29558866453972c9c33b5da3a9037
Reviewed-on: https://review.whamcloud.com/46598
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Lai Siyao <lai.siyao@whamcloud.com>
Reviewed-by: Alena Nikitenko <anikitenko@ddn.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>