Use working url for libreoffice-bin compilation

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 = 3.6.6
-url = http://download.documentfoundation.org/libreoffice/stable/${:version}/rpm/%s/LibO_${:version}_Linux_%s_install-rpm_en-US.tar.gz
+url = http://ftp.psu.ac.th/pub/libreoffice/${:version}/rpm/%s/LibO_${:version}_Linux_%s_install-rpm_en-US.tar.gz
 # supported architectures md5sums
 md5sum_x86 = 922935201a350a7e0d3f83c08f739ee2
 md5sum_x86-64 = fa41089ce29eb03cdfb34d06a1e786db