fix(@angular/cli): fix support for hidden options

They were showing when they should have been hidden.

Author: hansl

packages/angular/cli/models/schematic-command.ts

@@ -108,7 +108,7 @@ export abstract class SchematicCommand<
         schematic.description.schemaJson || {},
       );
 
-      this.description.options.push(...options);
+      this.description.options.push(...options.filter(x => !x.hidden));
     }
   }
 

packages/angular/cli/utilities/json-schema.ts

@@ -182,7 +182,8 @@ export async function parseJsonSchemaToOptions(
     const aliases = json.isJsonArray(current.aliases) ? [...current.aliases].map(x => '' + x)
                   : current.alias ? ['' + current.alias] : [];
     const format = typeof current.format == 'string' ? current.format : undefined;
-    const hidden = !!current.hidden;
+    const visible = current.visible === undefined || current.visible === true;
+    const hidden = !!current.hidden || !visible;
 
     const option: Option = {
       name,