Install networking-odl in develop mode
Install networking-odl in develop mode

This patch makes networking-odl package to be installed
in develop mode.

Change-Id: Ib1401b12d2dbb8310393caa6c94a2d68583b284a
Closes-Bug: #1553884

openstack/networking-odl,openstack/networking-odl,FedericoRessi/networking-odl,FedericoRessi/networking-odl,openstack/networking-odl