Log Message:
prosody: update to 0.12.2

This is a regularly delayed release containing a number of fixes for issues
that we have come across since the last release of the 0.12 series.

Summary of all changes in this release:

Fixes and improvements:

* util.stanza: Allow U+7F when constructing stazas
* net.unbound: Preserve built-in defaults and Prosodys settings for luaunbound
  (fixes #1763: luaunbound not reading resolv.conf) (thanks rgd)
* mod_smacks: Disable not implemented resumption behavior on s2s
* mod_http: Allow disabling CORS in the http_cors_override option and by
  default

Minor changes:

* util.json: Accept empty arrays with whitespace (fixes #1782: util.json fails
  to parse empty array with whitespace)
* util.stanza: Adjust number of return values to handle change in dependency of
  test suite (fix test with luassert >=1.9)
* util.startup: Ensure import() is available in prosodyctl (thanks keyzer)
* mod_storage_sql: Fix initialization when called from prosodyctl
* mod_storage_sql: Fix the summary API with Postgres (#1766)
* mod_admin_shell: Fixes for showing data related to disconnected sessions
  (fixes #1777)
* core.s2smanager: Don’t remove unrelated session on close of bidi session
* mod_smacks: Don’t send redundant requests for acknowledgement (#1761)
* mod_admin_shell: Rename commands user:roles() to user:setroles() and
  user:showroles() to user:roles()
* mod_smacks: Bounce unhandled stanzas from local origin (fix #1759)
* mod_bookmarks: Reduce log level of message about not having any bookmarks
* mod_s2s: Fix firing buffer drain events
* mod_http_files: Log warning about legacy modules using mod_http_files
* util.startup: Wait for last shutdown steps
* util.datamapper: Improve handling of schemas with non-obvious “type”
* util.jsonschema: Fix validation to not assume presence of “type” field
* util.jsonschema: Use same integer/float logic on Lua 5.2 and 5.3