Fix broken generateAndStoreKey tests

Sorry, this was my fault. I thought I'd run them but obviously not.

Test: adb shell am instrument -w -e package com.android.server.locksettings.recoverablekeystore com.android.frameworks.servicestests/android.support.test.runner.AndroidJUnitRunner
Change-Id: Ic45d59774e0aced17ef205559b2791ba7f26eabe
1 file changed