Missing slot_name option at create_subscription function.

[dusatvoj]

I have multiple patroni clusters with physical replication which allows me to create cluster-wide persistent replication slot via slots directive.

I'm missing directive to specify slot_name at create_subscription to achieve more stable replication slot without making postgres cluster in synchronous mode.

Thank you.

[dusatvoj]

This causes problems after restart of patroni cluster which is a publsher.