Oslo Config Generator Hack to Generate Helm Configs

To generate a file similar to etc/keystone.conf.sample resuming you have a virtual environment named oslo-config which satisfies both oslo-config-gen and keystone and the keystone source is in ../../openstack/keystone:

~/oslo-config/bin/python ./generate.py --config-file ../../openstack/keystone/config-generator/keystone.conf --namespace keystone