Refactor create-vch-wizard service getClusterVMGroups

We need to refactor create-vch-wizard service -> getClusterVMGroups method in order to fetch data from the correct endpoint. The new base endpoint will be /ui/vic/rest/data/* instead of /ui/data/* and /ui/vic/rest/tree/* instead of /ui/tree/* and they will be handled by our own vic java service layer.