filter out install objects when running config

Signed-off-by: Steven Armstrong <steven@icarus.ethz.ch>

cdist/config.py

@@ -162,6 +162,9 @@ class Config(object):
         """Short name for object list retrieval"""
         for cdist_object in core.CdistObject.list_objects(self.local.object_path,
                                                          self.local.type_path):
+            if cdist_object.cdist_type.is_install:
+                self.log.debug("Running in config mode, ignoring install object: {0}".format(cdist_object))
+            else:
                 yield cdist_object
 
     def iterate_once(self):