typo.

slapos/libnetworkcache.py

@@ -259,7 +259,7 @@ class NetworkcacheClient(object):
     if result.status != 201:
       raise NetworkcacheException('Failed to upload data to SHADIR Server.'
                                   ' Response code: %s. Response data: %s'
-                                  % (status, result.read()))
+                                  % (result.status, result.read()))
 
   def download(self, sha512sum):
     ''' Download the file.