Multiple Cluster Networks: add ip rule route

Adds support for ip route rules (ip route policy) to interfaces
 with gateways supplied. This will create a policy based default
 route for said interface. This is necessary to provide return
 routes when multiple cluster networks are defined, otherwise
 packets would only return on the default interface when the are
 outside of the network of the interface.

Adds disabled code to configure haproxy to keep vip points together
 There are some deployment cases where the deployer may need to
 enable this and this serves as the code example to perform it.

Resolves-bug #1272766
implments: bp multiple-cluster-networks

Change-Id: I06e09fd9b292cac53b925933006de064e725bdb0