slaprunner: monitoring-port can be modified through parameters

software/slaprunner/instance-runner.cfg

@@ -463,6 +463,10 @@ slapos-reference = master
 auto-deploy = true
 auto-deploy-instance = true
 autorun = false
+monitor-port = 9685
+
+[monitor-parameters]
+port = $${slap-parameter:monitor-port}
 
 [slapos-cfg]
 recipe = slapos.recipe.template:jinja2