ntpd: add hotplug script that signals when ntp reaches the stratum level like the sysntp implementation

use ntpq to check the status of the ntp server as all other status scripts included in the ntp tarball are
	based on perl which would dramatically increase the footprint of ntpd

Signed-off-by: Peter Wagner <tripolar@gmx.at>

net/ntpd/files/ntpd.hotplug-helper

@@ -0,0 +1,15 @@
+#!/bin/sh
+
+HOTPLUG_SCRIPT=/usr/sbin/ntpd-hotplug
+
+while true
+do
+	STATUS="$(ntpq -c 'rv 0 stratum'|awk -F '=' '{ print $2 }')"
+
+	if [ -n "$STATUS" ] && [ "$STATUS" -lt "16" ]
+	then
+		ACTION="stratum" /sbin/hotplug-call ntp
+		exit 0
+	fi
+	sleep 10
+done