rootfs: print which process caused monit to trigger restart

Add simple wrapper for monit to print which process caused monit to trigger
restart.

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

userspace/rootfs_override/etc/init.d/reboot.sh

+#!/bin/sh
+
+# simple wrapper for monit to announce reboot to console
+echo "Monit triggered reboot due to $1" > /dev/console
+/sbin/reboot

userspace/rootfs_override/etc/monit.d/dropbear.conf

@@ -2,4 +2,4 @@
    start program = "/etc/init.d/dropbear start"
    stop program = "/etc/init.d/dropbear stop"
    if failed host localhost port 22 type tcp then restart
-   if 5 restarts within 10 cycles then exec "/sbin/reboot"
+   if 5 restarts within 10 cycles then exec "/etc/init.d/reboot.sh dropbear"

userspace/rootfs_override/etc/monit.d/lighttpd.conf

@@ -2,4 +2,4 @@
    start program = "/etc/init.d/lighttpd.sh start"
    stop program = "/etc/init.d/lighttpd.sh stop"
    if failed host localhost port 80 type tcp then restart
-   if 5 restarts within 10 cycles then exec "/sbin/reboot"
+   if 5 restarts within 10 cycles then exec "/etc/init.d/reboot.sh lighttpd"

userspace/rootfs_override/etc/monit.d/snmpd.conf

  check process snmpd with pidfile /var/run/snmpd.pid
    start program = "/etc/init.d/snmpd start"
    stop program = "/etc/init.d/snmpd stop"
-   if 5 restart within 10 cycles then exec "/sbin/reboot"
+   if 5 restart within 10 cycles then exec "/etc/init.d/reboot.sh snmpd"