Rudder plugins » Scale-out relay

still there

This could be a nice, simple feature to add in scale-out-relay.
Three scenarios:

1/ from the scale-out relay UI:

- list of relays
- delete that relay (the "delete" button should be disabled for relay in that case)

2/ add a "node" deletion hook with the plugin

Deletion already had hooks, but I'm not sure they are for code hook. If no, we need to had them in 6.0.
Then add one for deletion of related feature.

3/ Consider relay as a known case from rudder core and delete related things from rudder core.

This is the simplest and less modular solution: when a node is deleted, look if it is/was a policy server and delete related groups/rule/directives.

Effort very small at least to look and choose at the correct solution.