Add MicrodroidTestApp to VTS

MicrodroidCapabilitiesTest now includes an @VsrTest, and so does
MicrodroidTests.

Bug: 252917978
Test: TH
Change-Id: I34bd42b158e02c19b7344b8b8299edcc130f264b
diff --git a/tests/testapk/Android.bp b/tests/testapk/Android.bp
index 2a04103..732be94 100644
--- a/tests/testapk/Android.bp
+++ b/tests/testapk/Android.bp
@@ -17,6 +17,7 @@
     name: "MicrodroidTestAppsDefaults",
     test_suites: [
         "cts",
+        "vts",
         "general-tests",
     ],
     static_libs: [