add monitoring and testing to the documentation

tsa/howto/template.mdwn

@@ -43,6 +43,11 @@
 <!-- such projects are never over. add a pointer to well-known issues -->
 <!-- and show how to report problems. usually a link to the bugtracker -->
 
+## Monitoring and testing
+
+<!-- describe how this service is monitored and how it can be tested -->
+<!-- after major changes like IP address changes or upgrades -->
+
 # Discussion
 
 ## Overview