Decrease the anti-congestion sleep in 480.leapfile-ntpd to 1 hour
24 hours is too long. Periodic scripts are executed serially, so when
combined with the sleep in 410.pkg-audit periodic could actually take more
than 24 hours and block the next invocation.
Reviewed by: cy
MFC after: 4 weeks
Sponsored by: Spectra Logic Corp
Differential Revision: https://reviews.freebsd.org/D7481