Bug 99445 - Better error message for No nodes available

https://bugzilla.redhat.com/show_bug.cgi?id=994445

Fix the error message to the user when NodeUnavailableException
is raised.
HAProxy fixes.
Writing env ERB files in the wrong location.
The upstream-repo is no longer necessary.
Fix for bug 991398
Merge pull request #3411 from mrunalp/bugs/haproxy_fixes

Merged by openshift-bot
Merge pull request #3398 from detiber/bz994445

Merged by openshift-bot
Merge pull request #3416 from rmillner/BZ998444

Merged by openshift-bot
Merge pull request #3417 from abhgupta/abhgupta-scheduler

Merged by openshift-bot