feat(scripts): Added operator_itemgetter to standard (#307)

Ref: https://docs.python.org/3/library/operator.html#operator.itemgetter

Products/zms/standard.py

@@ -1670,6 +1670,13 @@ def operator_delattr(a, b):
   """
   return delattr(a, b)
 
+security.declarePublic('operator_itemgetter')
+def operator_itemgetter(key, val, dictionary):
+
+    if val in map(operator.itemgetter(key), dictionary):
+        return True
+    return False
+
 #)