Fixed fact cache test difference between sqlite3 and postgres

I guess the sqlite adaptation of the JSONField was resulting in a json
encoded blob, where as the postgres version returned something that got
parsed out normally with the rest of the query result?

awx/main/tests/functional/commands/test_run_fact_cache_receiver.py

@@ -4,7 +4,6 @@
 # Python
 import pytest
 from datetime import datetime
-import json
 
 # Django
 from django.utils import timezone
@@ -80,12 +79,12 @@ def test_process_facts_message_ansible_overwrite(fact_scans, fact_msg_ansible):
 
     fact_obj = Fact.objects.get(id=fact_returned.id)
     assert key in fact_obj.facts
-    assert json.loads(fact_obj.facts) == fact_msg_ansible['facts']
-    assert value == json.loads(fact_obj.facts)[key]
+    assert fact_obj.facts == fact_msg_ansible['facts']
+    assert value == fact_obj.facts[key]
 
 # Ensure that the message flows from the socket through to process_fact_message()
 @pytest.mark.django_db
-def test_run_receiver(mocker, fact_msg_ansible): 
+def test_run_receiver(mocker, fact_msg_ansible):
     mocker.patch("awx.main.socket.Socket.listen", return_value=[fact_msg_ansible])
 
     receiver = FactCacheReceiver()