designate 3.0.0.0b2 development milestone

meta:version: 3.0.0.0b2
meta:series: newton
meta:release-type: development milestone
meta:announce: openstack-announce@lists.openstack.org
meta:pypi: no
meta:first: no
meta:release:Author: Graham Hayes <graham.hayes@hpe.com>
meta:release:Commit: Davanum Srinivas <davanum@gmail.com>
meta:release:Change-Id: I233047fc877d573e6af58686900a8d8f08f925fa
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