BZ #1123300 - haproxy check options missing interval parameter

https://bugzilla.redhat.com/show_bug.cgi?id=1123300

From BZ: "HA: all "check" options are missing the interval
parameter. This can cause higher recovery times in case of failure."
Merge pull request #337 from cwolferh/bz1123300_haproxy_inter2

BZ #1123300 - haproxy check options missing interval parameter