Introduce changes necessary for vrtio multiqueue support
Introduce changes necessary for vrtio multiqueue support

Due to the changes introduced in libvirt that allows for multiqueue with
kernel vRouter, we need to change read/write permissions of /dev/vhost-net.

Change-Id: Ic923ab4082e60191be2d3b6b3d999c630c49c45c
Partial-Bug: #1573067

Juniper/contrail-fabric-utils,Juniper/contrail-fabric-utils