Resolution blessing designated sections guidelines

In order to make progress, the DefCore subcommittee of the OpenStack
Foundation Board of Directors requires that the Technical Committee
defines and approves a set of base selection principles for "designated
sections".

This proposal is based on the summary of the 2014-03-28 meeting:
https://etherpad.openstack.org/p/openstack-designated-sections

Change-Id: I8d63e2285da8663005f8ff0fa2c9fb9120279292