Oops, I misunderstood the crontab fields.  Fix to actually run early morning.

Auditors: chris

Test plan:
Ran
   crontab crontab
successfully on toby, after this change.
Oops, I forgot alertlib needs the hostedgraphite key too.

Auditors: chris

Test plan:
Ran manually on jenkins:
   gae-default-version-notifier$ /usr/bin/env PYTHONPATH=alertlib:/home/ubuntu/alertlib_secret /usr/bin/python notify.py
without it dying right away.