default-suites: Add smpp

No need to run it for several BTS as the focus here is testing the core
network and interoperation with different BTS is already tested with the
sms suite. This way we avoid lossing extra time running the default
suite set.

Change-Id: Ie6458801ec1ecce63e08617d1e449047dc496e16
diff --git a/example/default-suites.conf b/example/default-suites.conf
index 50cbec2..eba7dea 100644
--- a/example/default-suites.conf
+++ b/example/default-suites.conf
@@ -2,3 +2,5 @@
 - aoip_sms:sysmo
 - sms:trx
 - aoip_sms:trx
+- smpp
+- aoip_smpp