fix tags cause notebooks instances to recreate

mmv1/products/notebooks/Instance.yaml

@@ -393,6 +393,7 @@ properties:
       The Compute Engine tags to add to instance.
     item_type: Api::Type::String
     default_from_api: true
+    diff_suppress_func: NotebooksInstanceTagsDiffSuppress
   - !ruby/object:Api::Type::KeyValuePairs
     name: 'metadata'
     description: |

mmv1/templates/terraform/constants/notebooks_instance.go

@@ -3,8 +3,22 @@ var NotebooksInstanceProvidedScopes = []string{
 	"https://www.googleapis.com/auth/userinfo.email",
 }
 
+var NotebooksInstanceProvidedTags = []string{
+	"deeplearning-vm",
+	"notebook-instance",
+}
+
 func NotebooksInstanceScopesDiffSuppress(_, _, _ string, d *schema.ResourceData) bool {
-  old, new := d.GetChange("service_account_scopes")
+	return NotebooksDiffSuppressTemplate("service_account_scopes", NotebooksInstanceProvidedScopes, d)
+}
+
+func NotebooksInstanceTagsDiffSuppress(_, _, _ string, d *schema.ResourceData) bool {
+	return NotebooksDiffSuppressTemplate("tags", NotebooksInstanceProvidedTags, d)
+}
+
+func NotebooksDiffSuppressTemplate(field string, defaults []string, d *schema.ResourceData) bool {
+	old, new := d.GetChange(field)
+
 	oldValue := old.([]interface{})
 	newValue := new.([]interface{})
 	oldValueList := []string{}
@@ -17,7 +31,7 @@ func NotebooksInstanceScopesDiffSuppress(_, _, _ string, d *schema.ResourceData)
 	for _, item := range newValue {
 		newValueList = append(newValueList,item.(string))
 	}
-	newValueList= append(newValueList,NotebooksInstanceProvidedScopes...)
+	newValueList= append(newValueList,defaults...)
 
 	sort.Strings(oldValueList)
 	sort.Strings(newValueList)

mmv1/templates/terraform/examples/notebook_instance_full.tf.erb

@@ -34,6 +34,9 @@ resource "google_notebooks_instance" "<%= ctx[:primary_resource_id] %>" {
     "https://www.googleapis.com/auth/cloud-platform",
     "https://www.googleapis.com/auth/userinfo.email"
   ]
+
+  tags = ["foo", "bar"]
+
   disk_encryption = "CMEK"
   kms_key         = "<%= ctx[:vars]['key_name'] %>"
   desired_state = "ACTIVE"