Add interfaces parameters into loadbalancer node settings
Add interfaces parameters into loadbalancer node settings

These parameters are now expected by role creating VMs disks.
Previously default settings - the same as for other overcloud nodes VMs
were used so let's have the same parameters as for VMs representing
overcloud nodes.

Change-Id: I0db496bd3b3f3fdb81b0f792db757a5fbe8cc301

redhat-openstack/infrared,okolisny/InfraRed,okolisny/InfraRed,redhat-openstack/infrared,okolisny/InfraRed,redhat-openstack/infrared