Draft: fix register log rotation when running in Zope
We noticed that some erp5 py3 neo test failed
it seems because ZServer has no python3 version, from Signals.Signals import SignalHandler failed, which make zope being killed when logrotate is running
killed pid XXXXXX with signal USR2
thus make request return 503 Service Unavailable when running test
Edited by Xiaowu Zhang