LU-14598 tests: skip conf-sanity test_122b in interop

LU-14598 tests: skip conf-sanity test_122b in interop

Code was fixed in 2.15.0.

Test-Parameters: trivial testlist=conf-sanity env=ONLY=122b serverversion=2.14.0
Fixes: 747fed818b ("LU-14598 ofd: fix for IDIF sequence at ofd_preprw_write")
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Change-Id: I6d9480f4b43706b597df6bd74c65959776cf2b5b
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/49583
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Sarah Liu <sarah@whamcloud.com>
Reviewed-by: Alexander Boyko <alexander.boyko@hpe.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>