testing: add a badge view
testing: add a badge view

Redirect to shields.io using the current set of failing builds to
determine whether to return success of failure.

Signed-off-by: Paolo Bonzini <69d3ebcf5ee4e7f05a50dc23cd96655b730804b4@redhat.com>

pvital/patchew,pvital/patchew,pvital/patchew,pvital/patchew