[Openstack-stable-maint] Proposed stable/grizzly release dates

Hi all,

I'd like to throw out some dates for discussion, based on folsom releases, which was about every 2 months:

2013.1 Grizzly release Apr 4 2013.1.1 Jun 6 2013.1.2 Aug 8 2013.1.3 Oct 10

Funnily enough, those Thursdays are all day_in_month# = month# which is nice to remember.

Cheers, Alan