Support neutron configuration in openstack-ops-database

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: I1b1caef3262ec9da33f1b2951939754d8c9c4b91