
* use gnocchi-api script for wsgi based on this commit[0].
* logfile is deprecated. Use log-file instead[1].
[0] c8717e8b71
[1] https://github.com/gnocchixyz/gnocchi/blob/master/gnocchi/opts.py#L77,L82
Change-Id: I8fbe8425e43d82e0f9601ba6303dd7f24142a2e6