tasks/mds_client_limits: fix initial rm -rf

This was previously a no-op because it was trying
to delete "*" instead of *

Signed-off-by: John Spray <john.spray@redhat.com>
tasks/cephfs: enable osd epoch get from mounts

Using new hooks for #7317

Signed-off-by: John Spray <john.spray@redhat.com>
tasks/cephfs: let get_config use non-mon services

Previously was always using the default values of things
so querying mon instead of the appropriate service
worked fine.  However, for things we might want to
update on a per-test basis we need to go ask the
correct service what the setting really is.

Needed for osd_mon_report_interval_max in the ENOSPC
testing.

Signed-off-by: John Spray <john.spray@redhat.com>
tasks: add mds_full task

This is for exercising the CephFS behaviour
when the cluster becomes full.

Signed-off-by: John Spray <john.spray@redhat.com>
suites/fs: hook in mds_full task

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