lxc: Add disable udhcp patch to LXC recipe

The provided patch makes a modification to the LXC busybox template (the
template that creates a minimal container with Busybox).

This type of container will start the udhcpc service - the DHCP client - on
init. For an embedded Linux image, we might assume that the majority of
containers will have manual / static networking configuration on start.
Considering this, starting the udhcpc service by default is useless, since
the service will then has to be killed. The containers that use DHCP for
networking can start udhcpc after container boot, or alter the busybox
template locally to do so by default.

The patch deactivates the default start of the DHCP client on a Busybox
container init.

Signed-off-by: Bogdan Purcareata <bogdan.purcareata@freescale.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>

recipes-containers/lxc/files/lxc-0.9.0-disable-udhcp-from-busybox-template.patch

@@ -0,0 +1,24 @@
+From d7e07e7acb1cbad33806f49143a2a30b4468c369 Mon Sep 17 00:00:00 2001
+From: Bogdan Purcareata <bogdan.purcareata@freescale.com>
+Date: Mon, 8 Apr 2013 18:30:19 +0300
+Subject: [PATCH] lxc-0.9.0-disable-udhcp-from-busybox-template
+
+---
+ templates/lxc-busybox.in | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/templates/lxc-busybox.in b/templates/lxc-busybox.in
+index cb425ec..bb8c951 100644
+--- a/templates/lxc-busybox.in
++++ b/templates/lxc-busybox.in
+@@ -84,7 +84,6 @@ EOF
+ #!/bin/sh
+ /bin/syslogd
+ /bin/mount -a
+-/bin/udhcpc
+ EOF
+ 
+     # executable
+-- 
+1.7.11.7
+

recipes-containers/lxc/lxc_0.9.0.bb

@@ -22,6 +22,7 @@ RDEPENDS_${PN} = " \
 "
 
 SRC_URI = "http://lxc.sourceforge.net/download/lxc/${PN}-${PV}.tar.gz \
+	file://lxc-0.9.0-disable-udhcp-from-busybox-template.patch \
 	"
 SRC_URI[md5sum] = "8552a4479090616f4bc04d8473765fc9"
 SRC_URI[sha256sum] = "1e1767eae6cc5fbf892c0e193d25da420ba19f2db203716c38f7cdea3b654120"