Store information whether node is a DPDK vRouter or not
Store information whether node is a DPDK vRouter or not

This is required for proper DPDK vRouter support in neutron as it has to
decide whether use regular vrouter or vhostuser vif types when plugging the
port into a VM.

Commit based on initial work obtained from Ajay Hampapur.

Change-Id: I1f7b95287ecdacf7b556a255e16f7b0dc2dfe247
Partial-Bug: #1504031

Juniper/contrail-provisioning,Juniper/contrail-provisioning