Document how to use the SYN eater iptables change to protect router reloads
Document how to use the SYN eater iptables change to protect router reloads

This documents the steps needed to enable the SYN eater to prevent
connection drops when the haproxy used by the router reloads.  In
order to work its magic it needs to use iptables, which entails all
sorts of fussing to get the router user to have the needed
permissions, and to patch the deployment config to make it request a
privileged container.

xiaoping378/openshift-docs,xiaoping378/openshift-docs,xiaoping378/openshift-docs