tests: Run all HTTP requests even if one fails
tests: Run all HTTP requests even if one fails

Even if an individual HTTP request fails, its still useful to see if
the rest do.  This will tell us if the failure is transient, and
whether or not its affecting multiple HAProxy containers.

PenguinToast/quilt,kklin/quilt,kklin/kelda,mmussomele/quilt,stevenlin598/quilt,ejj/quilt-dev,PenguinToast/quilt,quilt/quilt,LuiseV/quilt,kklin/kelda,NetSys/quilt,NetSys/quilt,quilt/quilt,tejasmanohar/quilt,NetSys/quilt,kklin/quilt,stevenlin598/quilt,PenguinToast/quilt,kayousterhout/quilt,kelda/kelda,kklin/quilt,PenguinToast/quilt,stevenlin598/quilt,mmussomele/quilt,kayousterhout/quilt,mmussomele/quilt,kelda/kelda,LuiseV/quilt,stevenlin598/quilt,stevenlin598/quilt,ejj/quilt-dev,ejj/quilt-dev,kayousterhout/quilt,quilt/quilt,ejj/quilt-dev,kayousterhout/quilt,kklin/kelda,kelda/kelda,kklin/kelda,tejasmanohar/quilt,tejasmanohar/quilt,PenguinToast/quilt,stevenlin598/quilt,NetSys/quilt,LuiseV/quilt,tejasmanohar/quilt,kklin/quilt,NetSys/quilt,LuiseV/quilt,quilt/quilt,LuiseV/quilt,kelda/kelda,mmussomele/quilt,mmussomele/quilt,mmussomele/quilt