Merge pull request #528 from k8s-infra-cherrypick-robot/cherry-pick-524-to-release-0.5

[release-0.5] Ability to run on PowerVS staging environment

Author: k8s-ci-robot

README.md

@@ -107,3 +107,11 @@ Please go through [CSI Spec](https://github.com/container-storage-interface/spec
 ### Testing
 * To build image, run: `make image`
 * To push image, run: `make push`
+
+### Running on PowerVS Staging
+To test the driver on the staging IBM Cloud PowerVS environment make use of the following environment variables.
+```
+export IBMCLOUD_IAM_API_ENDPOINT=https://iam.test.cloud.ibm.com
+export IBMCLOUD_RESOURCE_CONTROLLER_ENDPOINT=https://resource-controller.test.cloud.ibm.com;
+export IBMCLOUD_POWER_API_ENDPOINT=https://dal.power-iaas.test.cloud.ibm.com # Replace 'dal' with specific region of your test workspace.
+```

pkg/cloud/powervs.go

@@ -65,10 +65,11 @@ func NewPowerVSCloud(cloudInstanceID, zone string, debug bool) (Cloud, error) {
 func newPowerVSCloud(cloudInstanceID, zone string, debug bool) (Cloud, error) {
 	apikey := os.Getenv("IBMCLOUD_API_KEY")
 
-	authenticator := &core.IamAuthenticator{ApiKey: apikey}
+	authenticator := &core.IamAuthenticator{ApiKey: apikey, URL: os.Getenv("IBMCLOUD_IAM_API_ENDPOINT")}
 
 	serviceClientOptions := &resourcecontrollerv2.ResourceControllerV2Options{
 		Authenticator: authenticator,
+		URL:           os.Getenv("IBMCLOUD_RESOURCE_CONTROLLER_ENDPOINT"),
 	}
 	serviceClient, err := resourcecontrollerv2.NewResourceControllerV2(serviceClientOptions)
 	if err != nil {