merge 3.20.9 into 3.21 Fix conflict in unittest_postgres.py by changing sources configuration in PostgresTimeoutConfiguration.__init__ so it happens *after* setUpModule().

#! /bin/sh -e
 
case "$1" in
    purge)
	rm -rf /etc/cubicweb.d/
	rm -rf /var/log/cubicweb/
	rm -rf /var/lib/cubicweb/
    ;;
esac
 
#DEBHELPER#
 
exit 0