Bump Test Apex version code to 2147483647

BUG: 155445968
BUG: 159608084
BUG: 159608857
Test: TH
Change-Id: I12911d715a08ba518097e6048ceeccb25b33cdad
(cherry picked from commit 8e89c51c2aec7c5d24f5894849e519d3f2274b2d)
diff --git a/apex/testing/test_manifest.json b/apex/testing/test_manifest.json
index ddd642e..e1295a2 100644
--- a/apex/testing/test_manifest.json
+++ b/apex/testing/test_manifest.json
@@ -1,4 +1,4 @@
 {
   "name": "com.android.media",
-  "version": 300000000
+  "version": 2147483647
 }