Updated openstack/openstack
Project: openstack/oslo.config  2d4aff8f12bf40a6fd8d4a4b90213027719cdd41

generator: tweak how MultiStrOpt defaults are handled

If a MultiStrOpt default is set to None or [], the best thing to do is
just add:

  #multi_str_opt =

to the sample config file.

Change-Id: Ibaee466978870082be47a2135ae3f412d3efd623