Can we defined a Scale Policy on a swarm cluster?

Hello,

I would like to Know if there is a Scale Policy which I can tune when scalling up a service.

the update_config section seems not be taken into account when making a scale up of a service

` update_config:
parallelism: 1
delay: 40s
monitor: 10s

I would like to have similar control on scaling up my service (in this case a cassandra node which need to wait that the previous one has finished registering before going one, and each cassandra has a startup sleep 30sec)

thanks

sébastien