Disable finding plugin locations in the pubspec

pkg/analysis_server/test/src/plugin/plugin_locator_test.dart

 // Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:analysis_server/src/plugin/plugin_locator.dart';
 import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 main() {
@@ skipping 10 matching lines @@
   String defaultDirPath;
   PluginLocator locator;
 
   void setUp() {
     resourceProvider = new MemoryResourceProvider();
     packageRoot = resourceProvider.convertPath('/package');
     resourceProvider.newFolder(packageRoot);
     locator = new PluginLocator(resourceProvider);
   }
 
+  @failingTest
   void test_findPlugin_inPubspec_defaultDir() {
+    // Support for specifying plugin locations in the pubspec is temporarily
+    // disabled.
     String dirPath = _createPubspecWithKey();
     _createDefaultDir();
     expect(locator.findPlugin(packageRoot), dirPath);
   }
 
+  @failingTest
   void test_findPlugin_inPubspec_noDefaultDir() {
+    // Support for specifying plugin locations in the pubspec is temporarily
+    // disabled.
     String dirPath = _createPubspecWithKey();
     expect(locator.findPlugin(packageRoot), dirPath);
   }
 
   void test_findPlugin_noPubspec_defaultDir() {
     _createDefaultDir();
     expect(locator.findPlugin(packageRoot), defaultDirPath);
   }
 
   void test_findPlugin_noPubspec_noDefaultDir() {
@@ skipping 33 matching lines @@
     resourceProvider.newFolder(nonDefaultPath);
     return nonDefaultPath;
   }
 
   void _createPubspecWithoutKey() {
     _createPubspec('''
 name: test_project
 ''');
   }
 }