migrate code over from xos repo

Change-Id: I764ac3196babdb1ce78dded2b2d8d6ad6e965ca6
diff --git a/xos/synchronizer/model_policies/model_policy_Image.py b/xos/synchronizer/model_policies/model_policy_Image.py
new file mode 100644
index 0000000..c77d5bb
--- /dev/null
+++ b/xos/synchronizer/model_policies/model_policy_Image.py
@@ -0,0 +1,17 @@
+def handle(image):
+    from core.models import Controller, ControllerImages, Image
+    from collections import defaultdict
+
+    if (image.kind == "container"):
+        # container images do not get instantiated
+        return
+
+    controller_images = ControllerImages.objects.filter(image=image)
+    existing_controllers = [cs.controller for cs in controller_images] 
+    
+    all_controllers = Controller.objects.all() 
+    for controller in all_controllers:
+        if controller not in existing_controllers:
+            sd = ControllerImages(image=image, controller=controller)
+            sd.save()
+