Patch the kexec-load initscript so that it loads the kernel we want t…

…o kexec too even when shutting down (refs AvANa-BBS#53).

By default, that initscript only does useful things at reboot time.
The main use case for wiperam is probably shutting down the system,
so let's apply this hack for the time being.

config/hooks/run_kexec-load_even_at_shutdown.chroot

@@ -0,0 +1,34 @@
+#!/bin/sh
+
+# Have kexec-tools run even at shutdown
+# Patch not submitted to Debian yet, let's wait and see if our patch
+# for Debian#752790 is accepted first.
+
+set -e
+set -u
+
+# Use a subshell to make sure we don't mess up $PWD
+(
+
+cd /
+patch -p1 <<EOF
+--- a/etc/init.d/kexec-load	2014-12-01 20:23:12.826065938 +0100
++++ b/etc/init.d/kexec-load	2014-12-01 20:23:31.389572352 +0100
+@@ -101,14 +101,6 @@
+ 	exit 3
+ 	;;
+   stop)
+-	# If running systemd, we want kexec reboot only if current
+-	# command is reboot
+-	if [ -d /run/systemd/system ]; then
+-		systemctl list-jobs systemd-reboot.service | grep -q systemd-reboot.service
+-		if [ $? -ne 0 ]; then
+-			exit 0
+-		fi
+-	fi
+ 	do_stop
+ 	;;
+   *)
+EOF
+
+)