[services-ng] let backup manager/snapshot manager support ccng v2 api config change

Change-Id: I2365b63349644def8439df5969e471ea40816f8f

other commits:
https://github.com/cloudfoundry/vcap-services/commit/65d409263706772849fc4e6f812b6e0af08d1d11
https://github.com/vmw-tmpst/manifests/pull/3
https://github.com/vmware-ac/deployments/pull/18