Previously would fail because the cap waiter
completed too soon, without noticing that the
reason it completed quickly was because it failed.
Signed-off-by: John Spray <john.spray@redhat.com>
This will enable using .yaml changes to switch this
guy over to use kcephfs client once the teuthology
code around it supports all the same hooks as I've added
for fuse.
Signed-off-by: John Spray <john.spray@redhat.com>