usage() { echo "Usage: $0
[-s|--sdn <nosdn|odl|opencontrail>]
[-t|--type <noha|ha|tip>]
usage() { echo "Usage: $0
[-s|--sdn <nosdn|odl|opencontrail>]
[-t|--type <noha|ha|tip>]
[-l|--lab <default|custom>]
[-f|--feature <ipv6,dpdk,lxd,dvr,openbaton,multus>]
[-d|--distro <xenial>]
[-l|--lab <default|custom>]
[-f|--feature <ipv6,dpdk,lxd,dvr,openbaton,multus>]
[-d|--distro <xenial>]