LU-16658 tests: disable performance-sanity test_6
This test is likely failing due to a bug in mdsrate, which is no
longer actively developed. It should be replaced by mdtest.
Lustre-change: https://review.whamcloud.com/50386
Lustre-commit:
5e4897eb6f1c97d4f0120803780904db49c5abe7
Test-Parameters: trivial testlist=performance-sanity
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Change-Id: I05378fb75ed30e56983f4668c03725824ad5a8ab
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/50425
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>