mod_rest: Include full_jid property on origin
Fixes permission check in disco#info query to your own account, where
the 'to' would have been stripped since it equals the account JID,
leaving mod_disco passing nil, which triggers an error in module:may()
---
summary: STARTTLS failure test
---
This module responds to `<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>` with
`<failure xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>`, in order to test
how clients and server behave.
See [RFC6120 Section 5.4.2.2](https://xmpp.org/rfcs/rfc6120.html#rfc.section.5.4.2.2)