Clean up package imports and library names

pkg/analyzer/test/instrumentation/test_all.dart

 // Copyright (c) 2015, 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.
 
-library test.instrumentation.test_all;
+library analyzer.test.instrumentation.test_all;
 
 import 'package:unittest/unittest.dart';
 
 import 'instrumentation_test.dart' as instrumentation_test;
 
 /// Utility for manually running all tests.
 main() {
   groupSep = ' | ';
   group('instrumentation', () {
     instrumentation_test.main();
   });
 }