[rql sources] uses an URL as remote host address for pyro/zmq rql sources,
instead of extra configuration parameters. Follows modification of dbapi.connect api.
Closes #2539822
Document: cubicweb-doc
Title: CubicWeb documentation
Author: Logilab
Abstract: Some base documentation for CubicWeb users and developpers
Section: Apps/Programming
Format: HTML
Index: /usr/share/doc/cubicweb-documentation/index.html
Files: /usr/share/doc/cubicweb-documentation/*.html