Rename nsxv_driver to more genenric name lbv2_driver to support different version of vmware drivers (e.g. nsx_v, nsx_v3). Depends-on: I994d39a5dbdb38e1b7805b2eec97e8ef7719f556 Change-Id: I7308035d38f2ab15a85096ec30388ef5c3f56ca3