Remove `-publish` (which is currently Linux/QEMU specific) and replace with a
generic $KUBE_RUN_ARGS envvar. Usage:
KUBE_RUN_ARGS="-publish 2222:22" ./boot.sh
KUBE_PORT_BASE is thus obsolete and removed.
Signed-off-by: Ian Campbell <ijc@docker.com>
Port base is configurable (via $KUBE_PORT_BASE envvar). Master uses this and
nodes use subsequent ports.
Check that the node number is numeric so we can add them to things, but avoid
worker node 0 since the port will clash with master.
Signed-off-by: Ian Campbell <ian.campbell@docker.com>
