ldap.LdapClient: add update_need method

mylib/ldap.py

@@ -670,6 +670,18 @@ class LdapClient:
             ignore_attrs=protected_attrs, prefix=prefix
         )
 
+    def update_need(self, changes, protected_attrs=None):
+        """
+        Check if update is need
+
+        :param changes: The changes as returned by get_changes
+        """
+        assert self._conn or self.initialize()
+        return self._conn.update_need(
+            changes[0], changes[1],
+            ignore_attrs=protected_attrs
+        )
+
     def add_object(self, dn, attrs):
         """
         Add an object