[dovecot/core] a3783f: auth-db-dict: Allow key name expansion

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/dovecot/core
  Commit: a3783f8a3c9cd816b51e77a922f82301512fcf22
      https://github.com/dovecot/core/commit/a3783f8a3c9cd816b51e77a922f82301512fcf22
  Author: Aki Tuomi <aki.tuomi at dovecot.fi>
  Date:   2016-08-11 (Thu, 11 Aug 2016)

  Changed paths:
    M src/auth/db-dict.c

  Log Message:
  -----------
  auth-db-dict: Allow key name expansion

This allows expansion of dictionary keys based on userdb
variables on dict lookup mapping. Example:
key userdb {
  key = %{userdb:nspace:default}/userdb
  format = json
}