feat(user-rbac-info): add user policies in info

[rudyardrichter]

Improvements

• User info endpoint will return policy list from arborist for that user, if available.

[PlanXCyborg]

This PR contains code that is not formatted correctly according to black. Run black on your code before merging.

Expand the full diff to see formatting changes

--- tests/conftest.py
+++ blackened
@@ -180,11 +180,10 @@
     return "test-keypair-2"
 
 
 @pytest.fixture(scope="function")
 def mock_arborist_requests(request):
-
     def do_patch(urls_to_responses=None):
         urls_to_responses = urls_to_responses or {}
         defaults = {"arborist/health": {"GET": ("", 200)}}
         defaults.update(urls_to_responses)
         urls_to_responses = defaults

This formatting comment was generated automatically by a script in uc-cdis/wool.

[Avantol13]

LGTM