[test][docker_databases_provider] Import simplejson as json to make it easy to swap

beat/core/test/test_docker_databases_provider.py

@@ -40,7 +40,7 @@ import os
 import sys
 import logging
 import unittest
-import simplejson
+import simplejson as json
 import tempfile
 import shutil
 import zmq
@@ -128,7 +128,7 @@ class TestDatabasesProvider(unittest.TestCase):
 
     def start_databases_provider(self, configuration):
         with open(os.path.join(self.working_dir, "configuration.json"), "wb") as f:
-            data = simplejson.dumps(configuration, indent=4)
+            data = json.dumps(configuration, indent=4)
             f.write(data.encode("utf-8"))
 
         working_prefix = os.path.join(self.working_dir, "prefix")