* Move OVS related defaults from override-defaults to settings
* Add default value to Q_ENABLE_DRAGONFLOW_LOCAL_CONTROLLER
* Removed PUBLIC_BRIDGE as our defualt matches devstack
* Removed Q_USE_PROVIDERNET_FOR_PUBLIC which will now be true by
default. This will make `public` network flat rather than VxLAN so we
can reach its ports through br-ex
Change-Id: I2cef4e6b565d83860ce700aae2b498a9aa129ce3