Follow the chagne the API model.
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 <48ddf7139da17a0278f1f27e611ac6b9304f94b2@midokura.com>

midokura/python-midonetclient,midokura/python-midonetclient,midonet/python-midonetclient,midonet/python-midonetclient