add libxslt to parts, add zcbworkarounds and allow-hosts

software/slaprunner/software.cfg

@@ -6,6 +6,7 @@ extensions =
   slapos.rebootstrap
 
 parts =
+  libxslt
   eggs
   template
 

stack/flask.cfg

 # Stack for Flask microframework: http://flask.pocoo.org/
 [buildout]
+extensions =
+  slapos.zcbworkarounds
+
 extends =
   ../component/python-2.7/buildout.cfg
   ../component/lxml-python/buildout.cfg
 
+# Use only quite well working sites.
+allow-hosts =
+  *.nexedi.org
+  *.python.org
+  *.sourceforge.net
+  dist.repoze.org
+  effbot.org
+  github.com
+  peak.telecommunity.com
+  psutil.googlecode.com
+  www.dabeaz.com
+
 parts =
   libxslt
   eggs