SEBA-613 Customize test for 'make latest'

Change-Id: I71059c7c73c28b31829072e3cf093d33f6bccca6
diff --git a/seba-in-a-box/Makefile b/seba-in-a-box/Makefile
index e8bb651..21af435 100644
--- a/seba-in-a-box/Makefile
+++ b/seba-in-a-box/Makefile
@@ -279,6 +279,9 @@
 
 run-tests: | $(M)/qatests
 
+run-tests-latest: PYBOT_ARGS := '-v SUBSCRIBER_FILENAME:SIABSubscriberLatest'
+run-tests-latest: run-tests
+
 $(M)/qatests-prereqs:
 	sudo apt install -y python-pip virtualenv
 	touch $@