mod_pubsub_serverinfo: Detect existence of pub/sub node Instead of blindly trying to create the pub/sub node to publish items to, a service discovery query is performed to check if node creation is required. Added various bits of warn and debug logging, to give a user better feedback if and why something is failing.

---
labels:
- 'Stage-Obsolete'
---

::: {.alert .alert-warning}
As of Prosody 0.12.x, `prosodyctl shell user list HOST` can be used
instead of this module.
:::

This module adds a command to `prosodyctl` for listing users.

``` sh
prosodyctl mod_listusers
```