Reorganize tests for samples so the test is discoverable from the sample

samples/swarm/test/swarm_test.dart

Index: samples/swarm/test/swarm_test.dart
diff --git a/samples/tests/samples/swarm/swarm_test.dart b/samples/swarm/test/swarm_test.dart
similarity index 92%
rename from samples/tests/samples/swarm/swarm_test.dart
rename to samples/swarm/test/swarm_test.dart
index ac2074d5b6e176cb42d518ef1eddd310cc5e3834..2d5992dfaeb8297d831318d5dc9addbe182e7bda 100644
--- a/samples/tests/samples/swarm/swarm_test.dart
+++ b/samples/swarm/test/swarm_test.dart
@@ -4,15 +4,15 @@
 
 library swarm_tests;
 
-import "package:expect/expect.dart";
 import 'dart:html';
 import 'dart:async';
-import '../../../swarm/swarmlib.dart';
-import '../../../swarm/swarm_ui_lib/base/base.dart';
-import '../../../swarm/swarm_ui_lib/view/view.dart';
-import '../../../swarm/swarm_ui_lib/util/utilslib.dart';
-import '../../../../pkg/unittest/lib/unittest.dart';
-import '../../../../pkg/unittest/lib/html_config.dart';
+import 'package:expect/expect.dart';
+import 'package:unittest/html_config.dart';
+import 'package:unittest/unittest.dart';
+import '../swarmlib.dart';
+import '../swarm_ui_lib/base/base.dart';
+import '../swarm_ui_lib/view/view.dart';
+import '../swarm_ui_lib/util/utilslib.dart';
 
 // TODO(jmesserly): these would probably be easier to debug if they were written
 // in the WebKit layout test style, so we could easy compare that the DOM is