SuppressLint("ParcelCreator") on MockApplicationInfo

Apparently, the CREATOR field is not (yet?) needed in the tests, since
they work without it.  This gets us closer to making lint errors fail
the CI builds.

closes #580

app/src/androidTest/java/mock/MockApplicationInfo.java

@@ -1,9 +1,11 @@
 package mock;
 
+import android.annotation.SuppressLint;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 
+@SuppressLint("ParcelCreator")
 public class MockApplicationInfo extends ApplicationInfo {
 
     private final PackageInfo info;