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Automatic merge from submit-queue LBaaS v2 Support for Openstack Cloud Provider Plugin Resolves #19774. This work is based on Gophercloud support for LBaaS v2 currently in review (this will have to merge first): https://github.com/rackspace/gophercloud/pull/575 These changes includes the addition of a new loadbalancer configuration option: **LBVersion**. If this configuration attribute is missing or anything other than "v2", lbaas v1 implementation will be used.