teuthology-queue: list multi queue by default

Signed-off-by: Sage Weil <sage@redhat.com>
suite: scheule in mira,burnupi,plana by deafult

(was plana)

Signed-off-by: Sage Weil <sage@redhat.com>
Merge pull request #318 from ceph/wip-defaults

change defaults for mira,plana,burnupi