mod_sasl2_bind2, mod_sasl2_sm: Remove bind2 <features/> wrapper element
This was dropped from the spec. It's more consistent with SASL2.
# Flowcharts!
Put this module somewhere Prosody will find it and then run
`prosodyctl mod_discodot | dot -Tsvg -o disco-graph.svg` to receive a
graph like this[^1]:
+------------------------+ +------------------------------------------+
| proxy.external.example | <-- | VirtualHost "example.com" | -+
+------------------------+ +------------------------------------------+ |
| |
| |
v |
+------------------------------------------+ |
| Component "conference.example.com" "muc" | <+
+------------------------------------------+
Example config for the above:
``` {.lua}
VirtualHost "xmpp.example.com"
disco_items = {
{ "conference.example.com"; };
{ "proxy.external.example"; };
}
Component "conference.example.com" "muc"
```
Note the `disco_items` entry causing duplication since subdomains are
implicitly added.
[^1]: this was actuall made with `graph-easy`