instead of defining them as being in UTC, but not including the zone
info, we will keep the standard format with zone info, but always
output the time in UTC. This means that we can parse incoming
deadlines that happen to have zone information, though I don't think
we ever need to.
also adds a "noSleep" option to the server command to avoid the 5
second sleep we introduced on startup for non-coordinator cluster
nodes. The sleep doesn't seem to be needed in the tests and makes them
much slower.