Ship NTP changes

- Device time more accurate.  (e.g., +/- 10 seconds per day to < 100 ms on some devices)
   ( I know we don't need the perfect time server )
 - NTP and time will be accurate in manual mode (setting on Time Server > NTP Configuration WebGUI)
 - Change NTP "prefer" server:
    - The current preferred NTP server in an Undisciplined Local Clock.
    - This is intended when no outside source of synchronized time is available.
    - Change the "prefer" server from 127.127.1.0 to the Primary NTP server specified on
      the Time Server > NTP Configuration WebGUI page.
 - Change allows the drift file (located at /etc/ntp/drift) to be populated by ntpd.
    - The drift file is updated about once per hour which helps correct the device time.

Signed-off-by: Jon Murphy <jon.murphy@ipfire.org>

config/ntp/ntp.conf

@@ -1,6 +1,7 @@
 disable monitor
 restrict default nomodify noquery
 restrict 127.0.0.1
-server  127.127.1.0 prefer
+server  127.127.1.0
 fudge   127.127.1.0 stratum 10
 driftfile /etc/ntp/drift
+includefile /etc/ntp/ntpInclude.conf

src/initscripts/system/ntp

@@ -52,6 +52,8 @@ case "$1" in
 			fi
 		fi
 
+		echo -e "server	${NTP_ADDR_1} prefer\nserver	${NTP_ADDR_2}" > /etc/ntp/ntpInclude.conf
+
 		boot_mesg "Starting ntpd..."
 		loadproc /usr/bin/ntpd -Ap /var/run/ntpd.pid
 		;;