test: add csd_test

Show that csd_bs_list_remove() is currently broken, the next patch will
fix it.

Related: OS#4394
Change-Id: Icc98de75e97c75216a71caf94355d09330c95cba
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 5b77250..839e53b 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -4,6 +4,7 @@
 	db_sms \
 	sdp_msg \
 	mncc \
+	csd \
 	$(NULL)
 
 if BUILD_SMPP