Auto annotation (#660)

* Added missing import
* Added OPENVINO_TOOLKIT param in docker-compose.yml for auto annotation

cvat/apps/auto_annotation/inference.py

@@ -1,6 +1,6 @@
 from .model_loader import ModelLoader
 from cvat.apps.engine.utils import import_modules, execute_python_code
-
+import itertools
 
 def _process_detections(detections, path_to_conv_script, restricted=True):
     results = Results()

docker-compose.yml

@@ -49,6 +49,7 @@ services:
         USER: "django"
         DJANGO_CONFIGURATION: "production"
         WITH_TESTS: "no"
+        OPENVINO_TOOLKIT: "no"
     environment:
       DJANGO_MODWSGI_EXTRA_ARGS: ""
     volumes: