Introducing override for all resources in catalog

[OpenStack Infra]

https://review.openstack.org/397723
Dear bug triager. This bug was created since a commit was marked with DOCIMPACT.

commit 8680221d0b99d03e01027773f033667e5d76b68c
Author: Ukov Dmitry <email address hidden>
Date: Wed Sep 7 19:02:25 2016 +0300

    Introducing override for all resources in catalog

    * override_resources type extended with additional parameter that allows
      to control whether create new resource if it is not in catalog
    * override_resources is wrapped with create_resources
    * user can put any resource definition in hiera to override its configuration

    Change-Id: Ic1f7d856666eb84ced3cef986d8765edf707b481
    Blueprint: puppet-resource-override
    DocImpact
    (cherry picked from commit fd7b99399b19e6ef0f5a68beb614a88ac702738c)