Move FTP Provider to the New Structure

[aritra24]

Related: #46045

Provider Related PR: #41463
looks fairly stale, might not be relevant

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[jscheffl]

Looks good from code, lets have CI green...

[aritra24]

Looking into the failures... 🤔

[aritra24]

I guess it's due to the branch being out of date, merging main in to retry

[eladkal]

tests are failing

[aritra24]

The failures do not seem related, @eladkal is there any place I can find out if these are flaky tests or have been failing off late?
I see errors like so, which don't seem related to this pr.

 airflow/api_connexion/endpoints/dag_run_endpoint.py:279: in get_dag_runs_batch
readable_dag_ids = get_auth_manager().get_permitted_dag_ids(methods=["GET"], user=g.user)
airflow/utils/session.py:101: in wrapper
return func(*args, session=session, **kwargs)
airflow/auth/managers/base_auth_manager.py:398: in get_permitted_dag_ids
return self.filter_permitted_dag_ids(dag_ids=dag_ids, methods=methods, user=user)
airflow/auth/managers/base_auth_manager.py:417: in filter_permitted_dag_ids
if ("GET" in methods and self.is_authorized_dag(method="GET", user=user)) or (
airflow/auth/managers/simple/simple_auth_manager.py:183: in is_authorized_dag
return self._is_authorized(
airflow/auth/managers/simple/simple_auth_manager.py:296: in _is_authorized
user_role = user.get_role()
E AttributeError: 'NoneType' object has no attribute 'get_role'

[aritra24]

@vincbeck it looks like your change in #45986 might have broken the amazon provider test in 2.9.3 compat? I see the same error on your pr but somehow the ci passed? Could you take a look? fixed in #46245