Update libreoffice url

component/libreoffice-bin/buildout.cfg

@@ -13,7 +13,7 @@ find-links =
 recipe = slapos.recipe.build
 # here, two %s are used, first one is for directory name (eg. x86_64), and second one is for filename (eg. x86-64).
 version = 3.5.6
-url = http://download.documentfoundation.org/libreoffice/stable/${:version}/rpm/%s/LibO_${:version}_Linux_%s_install-rpm_en-US.tar.gz
+url = http://ftp.igh.cnrs.fr/pub/tdf/libreoffice/stable/${:version}/rpm/%s/LibO_${:version}_Linux_%s_install-rpm_en-US.tar.gz
 
 # supported architectures md5sums
 md5sum_x86 = 079609188b86ede3b3eebe2b75862b31