LU-18082 tests: fix sanity test_154i for interop

LU-18082 tests: fix sanity test_154i for interop

sanity test_154i can only pass if server side is also patched.
So skip this subtest in interop testing.

Test-Parameters: trivial
Test-Parameters: testlist=sanity env=ONLY=154i serverversion=2.15
Fixes: f5251cb7af ("LU-18082 utils: fid2path support for path exceeding PATH_MAX")
Signed-off-by: Sebastien Buisson <sbuisson@ddn.com>
Change-Id: Ic041fcd508e9aebb4c9edbf47bb585fb99c2ef7a
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/56369
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Sarah Liu <sarah@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>