LU-16868 tests: skip conf-sanity/32 in interop

LU-16868 tests: skip conf-sanity/32 in interop

Do not run conf-sanity.sh test_32* in interop testing.  Otherwise,
it is possible that the version of the test script running on the
client does not perform the upgrades with the right steps needed
for remote servers that are running a different version.

Lustre-change: https://review.whamcloud.com/52835
Lustre-commit: TBD (from 6368e97e593707d2ae1423dcb41c7f001f1d2152)

Test-Parameters: trivial testlist=conf-sanity env=ONLY=32a
Test-Parameters: testlist=conf-sanity env=ONLY=32a serverversion=EXA5
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Change-Id: Iabe1469a87d58c49e3c38b76ab18f8997f3ebbe5
Reviewed-on: https://review.whamcloud.com/c/ex/lustre-release/+/52836
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Alex Deiter <alex.deiter@gmail.com>