Add msc_vlr test suite for MSC+VLR end-to-end tests

Change-Id: If0e7cf20b9d1eac12126955b2f5f02bd8f1192cd
diff --git a/tests/Makefile.am b/tests/Makefile.am
index acfe7d2..b36844a 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -9,6 +9,7 @@
 	subscr \
 	nanobts_omlattr \
 	sms_queue \
+	msc_vlr \
 	$(NULL)
 
 if BUILD_NAT