Use JWT for access tokens (#15972)

* Use JWT for access tokens

* Update requirements

* Improvements

tests/common.py

@@ -314,12 +314,18 @@ def mock_registry(hass, mock_entries=None):
 class MockUser(auth_models.User):
     """Mock a user in Home Assistant."""
 
-    def __init__(self, id='mock-id', is_owner=False, is_active=True,
+    def __init__(self, id=None, is_owner=False, is_active=True,
                  name='Mock User', system_generated=False):
         """Initialize mock user."""
-        super().__init__(
-            id=id, is_owner=is_owner, is_active=is_active, name=name,
-            system_generated=system_generated)
+        kwargs = {
+            'is_owner': is_owner,
+            'is_active': is_active,
+            'name': name,
+            'system_generated': system_generated
+        }
+        if id is not None:
+            kwargs['id'] = id
+        super().__init__(**kwargs)
 
     def add_to_hass(self, hass):
         """Test helper to add entry to hass."""