Support neutron configuration

After we have havana branch, I search and replace all the quantum with
neturon to support neutron configuraton.
The related patch on cookbook-openstack-network is:
https://review.openstack.org/#/c/58217/

Implemented: blueprint neutron-support

Change-Id: I0aa81b661eaa7d305d7a2645e349c893b3c849f4
Merge "Support neutron configuration"