Port cookbook to Grizzly

Previously we where doing a lot of things which had little to do with
what happened during the last year. For instance, keystone auth values
moved from /etc/glance/glance-*-api-paste.ini to
/etc/glance/glance-*.conf (thus adjusting previously broken file perms).
Theremore, most upstream paste.ini files can be used as is (yay!).
glance-pruner/prefetcher/reaper went the way of the dodo. Apply
swift_store_create_container_on_put.

Further glance fixes will very likely have to depend on this.