allow multi-node systems to work with iptables and firewall apps enabled

Currently on centos 6, the columnstore platform applications ProcMon and Procmgr cant communicate with each other when iptables is enabled. Having this enables blocks the messaging between the servers for the platform applications across ports 8600-8620, whcih columnstore uses.

The same required exist for centos 7 and the firewalld process. Its currently a requirement to have this disabled.

Per a customer request, they need to keep iptables enabled for their security requirements and needs to have a multi-node columnstore system.