For Mitaka, neutron implements automatic generation of sample
configuration files and removes static sample configuration
files from the neutron source tree. Therefore, the
configuration reference must include local versions of
sample configuration files similar to other projects that
implement automatic generation of sample configuration files.
Change-Id: If92d048a837ffbd9ba8664559ddabe886f448a32
Closes-Bug: #1520722
39670ef35a