Zero-Touch configuration using Aruba Activate and AirWave is not supported on the RAP-2 or RAP-5. It is supported on all IAPs and the new RAPs (RAP-3, RAP-10x, RAP-155).
For the RAP-2 and RAP-5 either you pre-provision them or the end-user has to connect via wire and input the IP address of the controller to receive its' config.
#RAP155