tomcat-instance: send mail in shell script not in systemd unit

tomcat-instance/files/tomcat.service

@@ -9,7 +9,6 @@ EnvironmentFile=%h/conf/env
 UMask=0002
 ExecStart=/usr/share/tomcat7/bin/startup.sh
 ExecStop=/usr/share/tomcat7/bin/shutdown.sh
-ExecStopPost=/bin/sh -c date | /usr/bin/mail -s "%H/%u : Shutdown instance" %u
 Type=forking
 
 [Install]

tomcat-instance/templates/bin/shutdown.sh

@@ -2,3 +2,6 @@
 # alias for compatibility
 
 sudo -iu {{ tomcat_instance_name }} systemctl --user stop tomcat
+{% if tomcat_instance_mail is defined %}
+/bin/sh -c date | /usr/bin/mail -s {{ inventory_hostname }}/{{ tomcat_instance_name }} : Shutdown instance {{ tomcat_instance_mail }}
+{% endif %}