void deallocateService(AbstractService service) {
        hostPorts.deallocatePorts(service);
        services.remove(service.getServiceName());
    }
Adds service and allocates resources for it.

@param service the Service to allocate resources for
@param wantedPort the wanted port for this service
@return the allocated ports for the Service.
config-model/src/main/java/com/yahoo/vespa/model/HostResource.java