Generate the Neutron FWaaS sample config files by using the oslo
generator. The files are generated with a .sample extension and
replace the static example configuration files.
Once the generation code is delivered, the static config files
will be removed.
Change-Id: Ic8208850a27408c8fbeed80ecdb43345aa7dfaa4
Related-blueprint: autogen-neutron-conf-file
Partial-bug: #1199963
Depends-On: I8e9113dfb88e5290f6eedd012d1a52fc35c3c88c
7b7101f1c5