AI 147750: Add soft API test for SDK version

Automated import of CL 147750
diff --git a/tests/tests/os/src/android/os/cts/BuildVersionTest.java b/tests/tests/os/src/android/os/cts/BuildVersionTest.java
index d0fc544..ed94a1f 100644
--- a/tests/tests/os/src/android/os/cts/BuildVersionTest.java
+++ b/tests/tests/os/src/android/os/cts/BuildVersionTest.java
@@ -26,9 +26,11 @@
 public class BuildVersionTest extends TestCase {
 
     private static final String EXPECTED_RELEASE = "1.5";
+    private static final String EXPECTED_SDK = "3";
 
     public void testReleaseVersion() {
         // Applications may rely on the exact release version
         assertEquals(EXPECTED_RELEASE, Build.VERSION.RELEASE);
+        assertEquals(EXPECTED_SDK, Build.VERSION.SDK);
     }
 }