packages/skeleton-init-finit: sync Finit start scripts with myLinux

This adds Finit support for starting chronydy and mstpd, as well as
an update to inadyn supporting env file for custom args.

Also included is a patch to the start script of mstpd for BusyBox pidof,
which don't have the '-c' option.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

package/skeleton-init-finit/skeleton/etc/finit.d/available/chronyd.conf

@@ -0,0 +1,2 @@
+# Requires /etc/chrony.conf to star, see https://chrony.tuxfamily.org/doc/3.4/chrony.conf.html
+service [2345789] env:-/etc/default/inadyn chronyd -n $CHRONY_ARGS -- Chrony NTP v3/v4 daemon

package/skeleton-init-finit/skeleton/etc/finit.d/available/inadyn.conf

@@ -1,2 +1 @@
-service [2345] <net/route/default> inadyn -ns -t 30 -- DDNS client
-
+service [2345] <net/route/default> env:-/etc/default/inadyn inadyn -ns $INADYN_ARGS -- In-a-Dyn DDNS client

package/skeleton-init-finit/skeleton/etc/finit.d/available/mstpd.conf

@@ -0,0 +1,4 @@
+# Make sure to configure the bridge to run on before starting mstpd
+# Note: all 'sysv' type services are handed an extra 'start' or 'stop'
+# argument when starting and stopping.
+sysv name:mstpd [123456789] pid:!/run/mstpd.pid bridge-stp br0 -- MSTP daemon

patches/mstpd/0.1.0/busybox-pidof.patch

@@ -0,0 +1,26 @@
+--- mstpd-0.1.0/bridge-stp.in.orig	2022-02-04 11:49:59.764280663 +0100
++++ mstpd-0.1.0/bridge-stp.in	2022-02-04 11:51:00.212347703 +0100
+@@ -139,7 +139,7 @@
+         fi
+ 
+         # Start mstpd if necessary.
+-        if ! pidof -c -s mstpd >/dev/null; then
++        if ! pidof -s mstpd >/dev/null; then
+             if [ "$MANAGE_MSTPD" != 'y' ]; then
+                 errmsg 'mstpd is not running'
+                 exit 3
+@@ -212,12 +212,12 @@
+         done
+ 
+         # Kill mstpd, since no bridges are currently using it.
+-        kill $(pidof -c mstpd)
++        kill $(pidof mstpd)
+         ;;
+     restart|restart_config)
+         if [ "$action" = 'restart' ]; then
+             # Kill mstpd.
+-            pids="$(pidof -c mstpd)" ; Err=$?
++            pids="$(pidof mstpd)" ; Err=$?
+             if [ $Err -eq 0 ]; then
+                 echo 'Stopping mstpd ...'
+                 kill $pids