[multi-source] add test case for an encountered bug, fixed by adding state_of to dont_cross_relations. Added a note to remind me that something should be done to be smarter in handling this

#! /bin/sh -e

if [ -x "/etc/init.d/cubicweb-ctl" ]; then
    invoke-rc.d cubicweb-ctl restart || true
fi
 
 
#DEBHELPER#
 
exit 0