chore: Migrate gsutil usage to gcloud storage (#5439)

* chore: Migrate gsutil usage to gcloud storage

* Update bookshelf.go

---------

Co-authored-by: Katie McLaughlin <katie@glasnt.com>

Author: gurusai-voleti

getting-started/bookshelf/bookshelf.go

@@ -75,8 +75,8 @@ func NewBookshelf(projectID string, db BookDatabase) (*Bookshelf, error) {
 
 	// This Cloud Storage bucket must exist to be able to upload book pictures.
 	// You can create it and make it public by running:
-	//     gsutil mb my-project_bucket
-	//     gsutil defacl set public-read gs://my-project_bucket
+	//     gcloud storage buckets create gs://my-project_bucket
+	//     gcloud storage buckets update gs://my-project_bucket --predefined-default-object-acl=publicRead
 	// replacing my-project with your project ID.
 	bucketName := projectID + "_bucket"
 	storageClient, err := storage.NewClient(ctx)

getting-started/gce/startup-script.sh

@@ -28,7 +28,7 @@ chmod +x google-fluentd-install.sh && ./google-fluentd-install.sh
 service google-fluentd restart &
 
 APP_LOCATION=$(curl -s "http://metadata.google.internal/computeMetadata/v1/instance/attributes/app-location" -H "Metadata-Flavor: Google")
-gsutil cp "$APP_LOCATION" app.tar.gz
+gcloud storage cp "$APP_LOCATION" app.tar.gz
 tar -xzf app.tar.gz
 
 # Start the service included in app.tar.gz.