Add a mDNS package

tests/fletch_tests/all_tests.dart

Index: tests/fletch_tests/all_tests.dart
diff --git a/tests/fletch_tests/all_tests.dart b/tests/fletch_tests/all_tests.dart
index 1ec6804d32afce7fc5de3b37247fb9465d7c7c97..d40c0901efca087d8ce33bd89797165fb3d969de 100644
--- a/tests/fletch_tests/all_tests.dart
+++ b/tests/fletch_tests/all_tests.dart
@@ -35,6 +35,8 @@ import '../fletchc/driver/test_vm_connection.dart' as test_vm_connection;
 
 import '../debugger/debugger_tests.dart' as debugger_tests;
 
+import '../mdns_tests/mdns_tests.dart' as mdns_tests;
+
 typedef Future NoArgFuture();
 
 /// Map of names to tests or collections of tests.
@@ -93,4 +95,9 @@ const Map<String, NoArgFuture> TESTS = const <String, NoArgFuture>{
       test_vm_connection.testCloseAfterCommitChanges,
   'test_vm_connection/testCloseAfterProcessRun':
       test_vm_connection.testCloseAfterProcessRun,
+
+  // Test the mDNS package.
+  // TODO(sgjesse) publish the mDNS package as an ordinary package an pull
+  // it in through third_party.
+  'mdns_tests': mdns_tests.main,
 };