Added 401 to expected status codes on health check. 

This will allow for Basic Auth applications to work in scaled mode.

https://bugzilla.redhat.com/show_bug.cgi?id=1145810

Another minor nit here, for future reference: creating predictable tmp files like this opens possibilities for local DoSes. Under OpenShift this doesn't actually matter, because /tmp is polyinstantiated, but in general we should not even leave this kind of example around to copy and paste. The proper method is to use mktemp to make a randomized filename a la:

    tmpfile=$(mktemp /tmp/haproxy.cfg.XXXXXXXX)
    cp -f "$haproxy_cfg" $tmpfile
    ....