Follow up for change I7c57bba053711a27d3802efe6f2a0bf53483a54f
The current tests won't prevent this kind of regression in the
updaters' __init__ methods:
self.node_timeout = int(float(conf.get('node_timeout', 10)))
so this makes them a little tighter.
Change-Id: I60bd79ac392deb1e8a108357d48474dddd9028c1