tools/generate_config_file_samples.sh contains 'set -x'
at the end of line but it is unnecessary.
It was pointed out in the policy-in-code review
and I borrowed a script from this.
Change-Id: I2a0fd6051702693db340904fbe738d44ca4f15c0
This adds a new tox environment, genconfig, which generates sample
neutron core configuration file using oslo-config-generator.
Updates to some configuration option help messages to reflect useful
details that were missing in the code but were present in config files.
It also adds details to devref on how to update config files.
Partially-Implements: blueprint autogen-neutron-conf-file
DocImpact
Change-Id: I1c6dc4e7d479f1b7c755597caded24a0f018c712
Closes-bug: #1199963
Co-Authored-By: Louis Taylor <louis@kragniz.eu>