[server] avoid race-condition in timer events With a granularity of one second, there's a good chance calling localtime twice will return the same value. We should consider the event ready immediately if that happens, not wait one second.

usr/bin/cubicweb-ctl usr/bin/
usr/lib/PY_VERSION/*-packages/cubicweb/cwctl.py
../cubicweb-ctl.bash_completion etc/bash_completion.d/cubicweb-ctl