Update our fork of pkgcloud

Changed package.json to point to updated fork of pkgcloud.
Updated example config and schema to require the
settings.openstack.region option, pkgcloud now throws an error if
it is not defined.

Change-Id: Ie26021cb1b3d827f7914f34f87218347aa11ee00
Updated pkgcloud branch name

SVMP pkgcloud branch has a new name that makes more sense.

Change-Id: I3b7bf2cb6f22d8b793b645719d456c336dd11d0c