fix(controller): only load latest config

Fix deis#5017: only load latest config for each app from db to etcd on boot

controller/api/management/commands/load_db_state_to_etcd.py

@@ -1,6 +1,8 @@
+from __future__ import print_function
+
 from django.core.management.base import BaseCommand
 
-from api.models import Key, App, Domain, Certificate, Config
+from api.models import Key, App, Domain, Certificate
 
 
 class Command(BaseCommand):
@@ -9,8 +11,11 @@ class Command(BaseCommand):
     """
     def handle(self, *args, **options):
         """Publishes Deis platform state from the database to etcd."""
-        print "Publishing DB state to etcd..."
-        for model in (Key, App, Domain, Certificate, Config):
+        print("Publishing DB state to etcd...")
+        for app in App.objects.all():
+            app.save()
+            app.config_set.latest().save()
+        for model in (Key, Domain, Certificate):
             for obj in model.objects.all():
                 obj.save()
-        print "Done Publishing DB state to etcd."
+        print("Done Publishing DB state to etcd.")