Feature: standby register --with-slot-name

[jesperpedersen]

It would be nice to have an option to explicit set the used slot name when registering a standby, e.g.

repmgr standby register --with-slot-name=replica1

Could be exposed in the repmgr.conf file as well, and documented in https://repmgr.org/docs/4.1/cloning-replication-slots.html

Thanks for considering !

[jesperpedersen]

Same for repmgr primary register as it also has a slot_name defined in repmgr.nodes.