e2e: ensure single image for populator containers

This is useful in environments where the Deployment image is replaced
by another image from an internal registry (via fixture). In that case,
the populator running in populate mode should use the same image as the
populator running in controller mode.

test/e2e/storage/testsuites/provisioning.go

@@ -301,20 +301,27 @@ func (p *provisioningTestSuite) DefineTests(driver storageframework.TestDriver,
 					for i, container := range item.Spec.Template.Spec.Containers {
 						switch container.Name {
 						case "hello":
-							var found bool
 							args := []string{}
+							var foundNS, foundImage bool
 							for _, arg := range container.Args {
 								if strings.HasPrefix(arg, "--namespace=") {
 									args = append(args, fmt.Sprintf("--namespace=%s", popNamespace.Name))
-									found = true
+									foundNS = true
+								} else if strings.HasPrefix(arg, "--image-name=") {
+									args = append(args, fmt.Sprintf("--image-name=%s", container.Image))
+									foundImage = true
 								} else {
 									args = append(args, arg)
 								}
 							}
-							if !found {
+							if !foundNS {
 								args = append(args, fmt.Sprintf("--namespace=%s", popNamespace.Name))
 								framework.Logf("container name: %s", container.Name)
 							}
+							if !foundImage {
+								args = append(args, fmt.Sprintf("--image-name=%s", container.Image))
+								framework.Logf("container image: %s", container.Image)
+							}
 							container.Args = args
 							item.Spec.Template.Spec.Containers[i] = container
 						default: