Update BuildVersionTest for 2.2.2

Change-Id: I3aaa9f0927031d4c1905e96d50c41efed6a0a659
diff --git a/tests/tests/os/src/android/os/cts/BuildVersionTest.java b/tests/tests/os/src/android/os/cts/BuildVersionTest.java
index eee90c4..bbea5b7 100644
--- a/tests/tests/os/src/android/os/cts/BuildVersionTest.java
+++ b/tests/tests/os/src/android/os/cts/BuildVersionTest.java
@@ -32,7 +32,7 @@
 
     private static final String LOG_TAG = "BuildVersionTest";
     private static final Set<String> EXPECTED_RELEASES =
-        new HashSet<String>(Arrays.asList("2.2", "2.2.1"));
+        new HashSet<String>(Arrays.asList("2.2", "2.2.1", "2.2.2"));
     private static final int EXPECTED_SDK = 8;
 
     public void testReleaseVersion() {