[testlib] call init_config once the config has been properly bootstraped This should be done right after repository instantiation and as such involves giving CWTC.init_config as a callback to the test database handler (which will itself gives it to the repository initialization function). This unfortunatly requires to pass the init_config method to the server.init_repository function because it has to be called after the config has been initialized (which is done in Repository.__init__) but before the migration handler is instantiated (which will call 'server_maintainance' hook, hence may require the proper config). Another way to fix this would be to change the initialization sequence, but this is another story. Closes #3749378

/var/log/cubicweb/*.log {
        weekly
        missingok
        rotate 10
        compress
        delaycompress
        notifempty
        create 640 root adm
        sharedscripts
        postrotate
           if [ -x /usr/sbin/invoke-rc.d ]; then \
              invoke-rc.d cubicweb reload > /dev/null 2>&1; \
           else \
              /etc/init.d/cubicweb reload > /dev/null 2>&1; \
           fi; \
        endscript
}