Follow the chagne the API model.

This patch follows the API model change where the following nested
resources are introduced.

* /load_balancers/:loadBalancerId/pools
* /load_balancers/:loadBalancerId/vips
* /load_balancers/:loadBalancerId/pools/:poolId/pool_memnbers
* /load_balancers/:loadBalancerId/pools/:poolId/vips

Signed-off-by: Taku Fukushima <tfukushima@midokura.com>
Add man pages for L4LB commands.

This patch adds the Ronn files to be converted into the man pages.

Signed-off-by: Taku Fukushima <tfukushima@midokura.com>