This is our first grafyaml dashboard which reproduces the current
graphs on status.o.o/zuul rendered by graphite. While we aren't
actually running grafyaml upstream yet, we can get started on building
our dashboards.
We also added a tox job to properly gate on the configuration.
Change-Id: Ia738bcb510e146ab38566f0c13ff483ec618a6ed
Depends-On: I16b9affd4402fe5d1637238a2e27f22fdd3986ff
Signed-off-by: Paul Belanger <pabelanger@redhat.com>