remove trailing white spaces.

slapos/libnetworkcache.py

@@ -49,7 +49,7 @@ class short_exc_info(tuple):
     l = ['%s:%s\n' % (filename, lineno)]
     l += traceback.format_exception_only(t, v)
     return ''.join(l).rstrip()
-    
+
 def byteify(input):
   '''Transform every unicode string inside a list or dict into normal strings. '''
   if isinstance(input, dict):

slapos/networkcachehelper.py

@@ -65,7 +65,7 @@ def helper_upload_network_cached_from_directory(dir_url, cache_url,
 
 
 def helper_download_network_cached(dir_url, cache_url,
-    signature_certificate_list, 
+    signature_certificate_list,
     directory_key, wanted_metadata_dict={}, required_key_list=[],
     strategy=None):
   """