Fix travis failure for unrecognized library in integration test (#1686)

Author: jcollins-g

pubspec.lock

@@ -401,4 +401,4 @@ packages:
     source: hosted
     version: "2.1.13"
 sdks:
-  dart: ">=2.0.0-dev.23.0 <=2.0.0-dev.51.0"
+  dart: ">=2.0.0-dev.23.0 <=2.0.0-dev.53.0"

test/compare_output_test.dart

@@ -54,10 +54,8 @@ void main() {
         '--auto-include-dependencies',
         '--example-path-prefix',
         'examples',
-        '--exclude',
-        'package:meta/meta.dart',
         '--exclude-packages',
-        'Dart,tuple,quiver_hashcode',
+        'Dart,meta,tuple,quiver_hashcode',
         '--hide-sdk-text',
         '--no-include-source',
         '--output',

tool/grind.dart

@@ -878,10 +878,8 @@ updateTestPackageDocs() async {
         '--auto-include-dependencies',
         '--example-path-prefix',
         'examples',
-        '--exclude',
-        'package:meta/meta.dart',
         '--exclude-packages',
-        'Dart,tuple,quiver_hashcode',
+        'Dart,meta,tuple,quiver_hashcode',
         '--hide-sdk-text',
         '--no-include-source',
         '--output',