scheduler: fix perm diff on appEngineRouting (#1131)

Signed-off-by: Modular Magician <magic-modules@google.com>

google-beta/resource_cloud_scheduler_job.go

@@ -634,34 +634,24 @@ func flattenCloudSchedulerJobAppEngineHttpTargetHttpMethod(v interface{}, d *sch
 	return v
 }
 
+// An `appEngineRouting` in API response is useless, so we set config values rather than api response to state.
 func flattenCloudSchedulerJobAppEngineHttpTargetAppEngineRouting(v interface{}, d *schema.ResourceData) interface{} {
 	if v == nil {
 		return nil
 	}
+	if stateV, ok := d.GetOk("app_engine_http_target"); ok && len(stateV.([]interface{})) > 0 {
+		return d.Get("app_engine_http_target.0.app_engine_routing")
+	}
 	original := v.(map[string]interface{})
 	if len(original) == 0 {
 		return nil
 	}
 	transformed := make(map[string]interface{})
-	transformed["service"] =
-		flattenCloudSchedulerJobAppEngineHttpTargetAppEngineRoutingService(original["service"], d)
-	transformed["version"] =
-		flattenCloudSchedulerJobAppEngineHttpTargetAppEngineRoutingVersion(original["version"], d)
-	transformed["instance"] =
-		flattenCloudSchedulerJobAppEngineHttpTargetAppEngineRoutingInstance(original["instance"], d)
+	transformed["service"] = original["service"]
+	transformed["version"] = original["version"]
+	transformed["instance"] = original["instance"]
 	return []interface{}{transformed}
 }
-func flattenCloudSchedulerJobAppEngineHttpTargetAppEngineRoutingService(v interface{}, d *schema.ResourceData) interface{} {
-	return v
-}
-
-func flattenCloudSchedulerJobAppEngineHttpTargetAppEngineRoutingVersion(v interface{}, d *schema.ResourceData) interface{} {
-	return v
-}
-
-func flattenCloudSchedulerJobAppEngineHttpTargetAppEngineRoutingInstance(v interface{}, d *schema.ResourceData) interface{} {
-	return v
-}
 
 func flattenCloudSchedulerJobAppEngineHttpTargetRelativeUri(v interface{}, d *schema.ResourceData) interface{} {
 	return v