setup-ntp: actually commit the script

setup-ntp.in

+#!/bin/sh
+
+PREFIX=
+
+. "$PREFIX/lib/libalpine.sh"
+
+usage() {
+        cat <<__EOF__
+usage: setup-ntp [-hn]
+
+Setup NTP time synchronization
+
+options:
+ -h  Show this help
+ -n  Don't prompt, just use defaults
+__EOF__
+        exit 1
+}
+
+while getopts "hn" opt; do
+        case $opt in
+                n) PROMPT="0";;
+		h) usage;;
+        esac
+done
+
+if [ "$PROMPT" != "0" ]; then
+	echo "Which NTP service would you like to use? (openntpd, chrony, none) [openntpd]"
+	default_read ntpchoice "openntpd"
+	if [ "$ntpchoice" = "none" ]; then 
+		exit 0
+	fi
+fi
+
+acfinstalled="`apk version acf-core -q | awk '{print $1}'`"
+if [ "$ntpchoice" = "chrony" ]; then
+	if [ "$acfinstalled" != "ERROR:" ]; then
+		apk add acf-chrony -q
+	else
+		apk add chrony -q
+	fi
+	
+	echo "10 chronypass" > /etc/chrony/chrony.keys
+
+	/etc/init.d/chronyd start
+	rc-update add chronyd default
+elif [ "$ntpchoice" = "openntpd" ]; then
+	apk add openntpd -q
+	/etc/init.d/ntpd start
+	rc-update add ntpd default
+fi