Fix for issue 942

Removed VXPVNC from monitoring. RHEL does not support and being that
RHEL is a supported platform we need to make sure that the offering
is consistent on both RHEL and Ubuntu.

Issue
https://github.com/rcbops/chef-cookbooks/issues/942

(cherry picked from commit 8b8e203efa5b7b004a8f1e8e5eb8039069d7ffd9)