Adds support for Openstack Networking FWaaS (Firewall)

blueprint quantum-fwaas-devstack

Change-Id: I3c546433415ab18a5933a25774a06df7c4cb42e9
Add support for heat resource templates

These are resources that are defined as a template and
can be customised by a deployer.

Change-Id: Ia739a36d627b7cfec26641b89513355e65cd1d1f
Fix is_package_installed() check with dpkg

is_package_installed() incorrectly returned '0' for packages that
had 'un' status in the dpkg database.

Change-Id: I81b77486c2ed7717ed81cb2c2572fe6c4b394ffc
Merge "Fix is_package_installed() check with dpkg"
Merge "Adds support for Openstack Networking FWaaS (Firewall)"
Merge "Add support for heat resource templates"