Add copyright.

Author: vkryachko

integ-testing/integ-testing.gradle

@@ -1,3 +1,16 @@
+// Copyright 2018 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
 
 plugins {
     id 'com.android.library'
@@ -19,5 +32,4 @@ android {
 dependencies {
     implementation 'junit:junit:4.13'
     implementation 'androidx.test:runner:1.3.0'
-
-}
+}