Update Robolectric to 3.4.2

Bug: 66693279
Test: m RunSettingsRoboTests
      m RunSettingsRoboTests-jacoco
Change-Id: I9df619c3d68f0af2ee2ae944a15998275129f7c2

tests/robotests/src/com/android/settings/fuelgauge/BatteryEntryTest.java

@@ -147,7 +147,7 @@ public class BatteryEntryTest {
     }
 
     @Test
-    public void extractPackageFromSipper_normalSipper_returnDefaultPakcage() {
+    public void extractPackageFromSipper_normalSipper_returnDefaultPackage() {
         BatteryEntry entry = createBatteryEntryForApp();
 
         assertThat(entry.extractPackagesFromSipper(entry.sipper)).isEqualTo(entry.sipper.mPackages);