Fix devicelab tests broken by #14173 (#14420)

dev/devicelab/bin/tasks/flutter_gallery_instrumentation_test.dart

@@ -21,7 +21,7 @@ Future<Null> main() async {
       await flutter('packages', options: <String>['get']);
       await flutter('clean');
       await flutter('build', options: <String>['apk', '--target', 'test/live_smoketest.dart']);
-      final String androidStudioPath = grep('Android Studio at', from: await evalFlutter('doctor')).first.split(' ').last;
+      final String androidStudioPath = grep('Android Studio at', from: await evalFlutter('doctor', options: <String>['-v'])).first.split(' ').last;
       await exec('./tool/run_instrumentation_test.sh', <String>[], environment: <String, String>{
         'JAVA_HOME': '$androidStudioPath/jre',
       });

dev/devicelab/bin/tasks/gradle_plugin_test.dart

@@ -14,7 +14,7 @@ String javaHome;
 void main() {
   task(() async {
     section('Running flutter doctor to get JAVA_HOME');
-    final String flutterDoctor = await evalFlutter('doctor');
+    final String flutterDoctor = await evalFlutter('doctor', options: <String>['-v']);
     final RegExp javaHomeExtractor = new RegExp(r'Android Studio at (.*)');
     javaHome = javaHomeExtractor.firstMatch(flutterDoctor).group(1) + '/jre';