Use private IP for pinging and let ping not abort the Chef run.
Revert "Use private IP for pinging and let ping not abort the Chef run."

This reverts commit ceec70c0d1457f3d2e9e9cb9a3bcde139619cc12.
Revert "Ping RS nodes."

This reverts commit fe7ed0f6d30526dd5e74c60916fbbb46e1435bbb.