Add rules tag in the pygrass module interface

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@64295 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/python/pygrass/modules/interface/read.py

@@ -46,6 +46,7 @@ GETFROMTAG = {
     'suppress_required': get_None,
     'keywords': read_text,
     'guidependency': read_text,
+    'rules': get_None,
 }
 
 GETTYPE = {