This utilizes the recent feature in teuthology [1] to skip hidden files in
suites when building the job matrix.
Idea of this change is to enable referring to the top-level qa directory in a
position-independent way such that copies of a suite to another location do not
break any symlinks.
[1] https://github.com/ceph/teuthology/pull/1185
Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>
