Use valid key and project id in integ test.

Author: danasilver

firebase-config/src/androidTest/java/com/google/firebase/remoteconfig/FirebaseRemoteConfigIntegrationTest.java

@@ -50,8 +50,9 @@
 
 @RunWith(AndroidJUnit4.class)
 public class FirebaseRemoteConfigIntegrationTest {
-  private static final String API_KEY = "api_key";
+  private static final String API_KEY = "AIzaSyabcdefghijklmnopqrstuvwxyz1234567";
   private static final String APP_ID = "1:14368190084:android:09cb977358c6f241";
+  private static final String PROJECT_ID = "fake-frc-test-id";
 
   @Mock private ConfigCacheClient mockFetchedCache;
   @Mock private ConfigCacheClient mockActivatedCache;
@@ -84,7 +85,11 @@ public void setUp() {
     FirebaseApp firebaseApp =
         FirebaseApp.initializeApp(
             context,
-            new FirebaseOptions.Builder().setApiKey(API_KEY).setApplicationId(APP_ID).build());
+            new FirebaseOptions.Builder()
+                .setApiKey(API_KEY)
+                .setApplicationId(APP_ID)
+                .setProjectId(PROJECT_ID)
+                .build());
 
     // Catch all to avoid NPEs (the getters should never return null).
     when(mockFetchedCache.get()).thenReturn(Tasks.forResult(null));