slaprunner: do not use localhost ip for instance-dependant servers

software/slaprunner/instance-runner.cfg

@@ -630,7 +630,7 @@ logfile = $${directory:log}/supervisord.log
 numprocs = 1
 path = $${environ:PATH}
 pidfile = $${directory:run}/supervisord.pid
-server = 127.0.0.1:39986
+server = $${slaprunner:ipv4}:39986
 slapgrid-cp = slapgrid-cp
 slapgrid-cp-command = $${slaprunner:slapos} node instance --all --cfg $${slaprunner:slapos.cfg} --pidfile $${:slapgrid-cp-pid} --verbose --logfile $${:slapgrid-cp-log}
 slapgrid-cp-log = $${runnerdirectory:home}/instance.log