avahi: fix resource temporarily unavailable issue

It sometimes fails to run avahi with error: "Could not receive return value
from daemon process". It has same root cause with
lxc/lxc#25.

Backport patch to fix this issue.

(From OE-core rev: a901956968127b2eb5911d7b91f44fca46e30b25)

Signed-off-by: Kai Kang <kai.kang@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>

meta/recipes-connectivity/avahi/avahi_0.6.32.bb

@@ -12,6 +12,8 @@ LIC_FILES_CHKSUM = "file://LICENSE;md5=2d5025d4aa3495befef8f17206a5b0a1 \
                     file://avahi-daemon/main.c;endline=21;md5=9ee77368c5407af77caaef1b07285969 \
                     file://avahi-client/client.h;endline=23;md5=f4ac741a25c4f434039ba3e18c8674cf"
 
+SRC_URI += "file://avahi-fix-resource-unavaiable.patch"
+
 SRC_URI[md5sum] = "22b5e705d3eabb31d26f2e1e7b074013"
 SRC_URI[sha256sum] = "d54991185d514a0aba54ebeb408d7575b60f5818a772e28fa0e18b98bc1db454"
 

meta/recipes-connectivity/avahi/files/avahi-fix-resource-unavaiable.patch

@@ -0,0 +1,30 @@
+Upstream-Status: Backport
+
+Backport from:
+https://github.com/experimental-platform/platform-hostname-avahi/pull/9
+
+It sometimes fails to run avahi with error: "Could not receive return value
+from daemon process". It has same root cause with
+https://github.com/lxc/lxc/issues/25.
+
+Signed-off-by: Kai Kang <kai.kang@windriver.com>
+---
+From 5150983102ad5ad43f0dae203cb332c168eb5a71 Mon Sep 17 00:00:00 2001
+From: Hinnerk Haardt <haardt@information-control.de>
+Date: Thu, 17 Dec 2015 11:52:19 +0100
+Subject: [PATCH] Fix `chroot.c: fork() failed: Resource temporarily
+ unavailable` as per https://github.com/lxc/lxc/issues/25.
+
+---
+ avahi-daemon/avahi-daemon.conf | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/avahi-daemon/avahi-daemon.conf b/avahi-daemon/avahi-daemon.conf
+index 95166f8..3d5b7a6 100644
+--- a/avahi-daemon/avahi-daemon.conf
++++ b/avahi-daemon/avahi-daemon.conf
+@@ -65,4 +65,3 @@ rlimit-data=4194304
+ rlimit-fsize=0
+ rlimit-nofile=768
+ rlimit-stack=4194304
+-rlimit-nproc=3