misc: rename the dangerous_norepair group to fuzzers_norepair

misc: rename the dangerous_norepair group to fuzzers_norepair

I've been running the norepair fuzzers (aka the verifier checks) for
most of the time that online fsck has been in development, and I haven't
seen any of the VMs crash in a couple of years.  I think it's time that
these tests stopped hiding behind the "dangerous" label.

Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Zorro Lang <zlang@kernel.org>