Don't keep user defined role_id and user_id
Don't manipulate the print spec, let's the CGXP Print plugin and the
mapserver_proxy to do what's needed
Patch the print
Sources:
https://github.com/camptocamp/mapfish-print/commits/c2cgeoportal-1.3
Revision:
46700593bcc16163298a00d3625a722799d71196
Merge pull request #599 from camptocamp/print-parent-protected-layers

Print parent protected layers
Merge remote-tracking branch 'origin/1.3'

Conflicts:
	c2cgeoportal/scaffolds/update/print/print-servlet-1.2-SNAPSHOT.war

Updated to revision bdb3d3189f9375f2704d7d5162cf9b6e4cb9b69b
A separate pull request will used the new file name