Regenerate nova.conf.sample
Regenerate nova.conf.sample

Some pretty monstrous hacking in the extraction tool is required to
guess the group which options are in. It was pretty hacky to begin with
though.

Change-Id: Ie93dcfc82ab19af4e3cb7090bbb03d9efee83aa2

emonty/oslo-hacking,openstack-dev/hacking,hyakuhei/cleantox,emonty/oslo-hacking,zancas/hacking,zancas/hacking,openstack-dev/hacking,hyakuhei/cleantox