This patch adds support to automatically generate config files
for vmware-nsx repo using oslo config generator[1] for all
VMware plugins.
Tox can be used to generate a sample config file using the
following command:
tox -e genconfig
This will generate a config file "nsx.ini.sample" under
vmware-nsx/etc/ folder.
This patch also modifies devstack scripts to use the
auto-generated config files and adds more information to help
texts in config modules.
[1] http://docs.openstack.org/developer/oslo.config/generator.html
Change-Id: Iff4ea37b52616295b262ead53947acb5b0cd9cd7
Partial-Bug: #1568215