Added VTS tests for MediaCas

Bug: 63914034
Bug: 65593293
Change-Id: I1064ac14513508d2f821a1a27dafcc7389b1a691
diff --git a/cas/Android.bp b/cas/Android.bp
index 57532a0..8208d3d 100644
--- a/cas/Android.bp
+++ b/cas/Android.bp
@@ -1,6 +1,7 @@
 // This is an autogenerated file, do not edit.
 subdirs = [
     "1.0",
+    "1.0/vts/functional",
     "1.0/default",
     "native/1.0",
 ]