...so that we can selectively disable those
which are not appropriate for multimds testing, or
which are not kclient compatible (all multimds workunits
run against both kclient and fuse).

Signed-off-by: John Spray <john.spray@redhat.com>

Quotas don't work with kclient, and multimds tasks
are run against kclient.  We don't need to run this
against fuse here because it's a basic correctness
test that's run against fuse in the fs suite.

Fixes: http://tracker.ceph.com/issues/18600
Signed-off-by: John Spray <john.spray@redhat.com>

These were running so few ops that they weren't
giving any meaningful exercise to a multimds
system beyond what we're already covering in
the fs suite.

Signed-off-by: John Spray <john.spray@redhat.com>