Add a default results_sending_email

Signed-off-by: Zack Cerza <zack@redhat.com>
Mention test name when failing to schedule

Signed-off-by: Zack Cerza <zack@redhat.com>
Choose SHA1 sums more intelligently

By checking the actual gitbuilder archive that we care about, if
--distro is passed. If it is not, tweak the default to 'rhel' instead of
'ubuntu' since that seems to produce better results. To be clear, this
is a workaround I'm putting in place since our gitbuilders never seem to
be in sync.

Signed-off-by: Zack Cerza <zack@redhat.com>
Merge pull request #364 from ceph/wip-scheduling

Fix / work around gitbuilder problems