Network cache URLs are mandatory

slapos/libnetworkcache/__init__.py

@@ -31,7 +31,7 @@ class NetworkcacheClient(object):
      - SHACACHE
   '''
 
-  def __init__(self, shacache=None, shadir=None):
+  def __init__(self, shacache, shadir):
     ''' Set the initial values. '''
     # ShaCache Properties
     if shacache is not None: