in IoT-Sample/Swift/IoTSampleSwift/ConnectionViewController.swift [278:288]
func initializeControlPlane(credentialsProvider: AWSCredentialsProvider) {
//Initialize control plane
// Initialize the Amazon Cognito credentials provider
let controlPlaneServiceConfiguration = AWSServiceConfiguration(region:AWS_REGION, credentialsProvider:credentialsProvider)
//IoT control plane seem to operate on iot.<region>.amazonaws.com
//Set the defaultServiceConfiguration so that when we call AWSIoTManager.default(), it will get picked up
AWSServiceManager.default().defaultServiceConfiguration = controlPlaneServiceConfiguration
iotManager = AWSIoTManager.default()
iot = AWSIoT.default()
}