Rename ART release APEX to com.android.art.

Test: See https://r.android.com/1457217
Bug: 169639321
Change-Id: Ib8730282f982af7d789820c499aaa65308366145
Merged-In: Ib8730282f982af7d789820c499aaa65308366145
diff --git a/Android.bp b/Android.bp
index acd60a3..ad52398 100644
--- a/Android.bp
+++ b/Android.bp
@@ -101,8 +101,8 @@
     sdk_version: "none",
     java_version: "1.7",
     apex_available: [
+        "com.android.art",
         "com.android.art.debug",
-        "com.android.art.release",
     ],
 }