Comment 24 for bug 1257082

There has been no movment on the Debian bug report in about 6 months, and they appear to view ntpdate as legacy. SO I think we're faced with a decision:

1) Use ntpd -g instead, i.e. stop installing the ntpdate command and use the ntp package instead and fix startup options for NTP to include "-g" in preseed

2) Use the proposed preseed change by Dann.

I feel #2 is better because if Debian is going to remove ntpdate at a later stage, they will include "-g" for ntpd by default, at which time we can simply remove our fix again. If we use #1 we might break things once Debian goes this route.