Simplify zabbix SR

software/zabbix-agent/software.cfg

 [buildout]
+
 extends =
   ../../component/dcron/buildout.cfg
   ../../component/logrotate/buildout.cfg
   ../../component/zabbix/buildout.cfg
-  ../../component/lxml-python/buildout.cfg
-
-find-links = http://www.nexedi.org/static/packages/source/slapos.buildout/
-
-versions = versions
+  ../../stack/slapos.cfg
 
 parts =
-  eggs
+  slapos-cookbook
   template
 
-# Use only quite well working sites.
-allow-hosts =
-  *.nexedi.org
-  *.python.org
-  *.sourceforge.net
-
-[eggs]
-recipe = zc.recipe.egg
-eggs =
-  ${lxml-python:egg}
-  slapos.cookbook
-
 [template]
 # Default template for the instance.
 recipe = slapos.recipe.template