Flesh out more smtp config

ansible/templates/alerta.conf

@@ -8,6 +8,7 @@ timezone = Europe/London
 
 [alerta-mailer]
 amqp_url = {{ db_type }}://{{ db_user }}:{{ db_passwd }}@{{ db_loc }}/kombu
+dashboard_url = https://{{ domain }}
 debug = True
 email_type = text
 endpoint = http://localhost:8080
@@ -15,6 +16,8 @@ key = {{ alerta_mailer_api_key }}
 mail_from = {{ mail_from }}
 mail_to = {{ mail_to }}
 skip_mta = False
+smtp_host = {{ smtp_host }}
 smtp_password = {{ smtp_passwd }}
+smtp_port = {{ smtp_port }}
 smtp_starttls = True
 smtp_username = {{ smtp_username }}