Use config from midonet module
Use config from midonet module

Instead of relying on the upstream config module, use
the one provided by downstream.

Change-Id: Ic7e76fb896a6e81e370f4bd91f8be5d086696c89
Fixes: MN-3003
Signed-off-by: Ryu Ishimoto <079ed83f2117612507014e8df63a80b706c7096b@midokura.com>

midonet/python-neutron-plugin-midonet,midokura/python-neutron-plugin-midonet,yamt/networking-midonet,midokura/python-neutron-plugin-midonet,yamt/networking-midonet,JoeMido/networking-midonet,JoeMido/networking-midonet,midonet/python-neutron-plugin-midonet