Description Johannes Lohmer 2023-05-02 16:22:40 CEST

While debugging #55984 https://forge.univention.org/bugzilla/show_bug.cgi?id=55984 I noticed that once I set a value like `mobilePhone`, `buisnessPhone` or many other  non-essential values, the values don't get removed from the azure user.

Azure supports setting values back to null, but it is not implemented in our connector.

Before motifying(or deactivating) a user We filter out all none values and thus will never reset them back to empty.

azureobjects.py:
401 │   def update(self, other):
402 │   │   # type: ('AzureObject') -> Dict[str, Any]
403 │   │   """"""
404 │   │   data = (self - other).get_not_none_values_as_dict()

`data` will be the MSGraph update request payload later in the code.