1) Only generate neutron configuration files necessary for
each target.
2) Limit database connection string in neutron.conf to server
container.
3) Limit database sync to neutron server container.
Co-Authored-By: Matt Kassawara <mkassawara@gmail.com>
Change-Id: Iba8903235675dec4e7bf6b01eeb130f7b43bbfef
Closes-Bug: 1443927