Fix Azure template imports.

circle/vm/tasks/local_periodic_tasks.py

@@ -193,13 +193,13 @@ def update_azure_builtin_templates():
                     current_version_ids.append(current_version.azure_id)
     
     # delete old publishers, offers, skus, and versions
-    AzureBuiltinPublisher.objects.filter(
+    AzureBuiltinPublisher.objects.exclude(
         azure_id__in=current_publisher_ids).delete()
-    AzureBuiltinOffer.objects.filter(
+    AzureBuiltinOffer.objects.exclude(
         azure_id__in=current_offer_ids).delete()
-    AzureBuiltinSKU.objects.filter(
+    AzureBuiltinSKU.objects.exclude(
         azure_id__in=current_sku_ids).delete()
-    AzureBuiltinVersion.objects.filter(
+    AzureBuiltinVersion.objects.exclude(
         azure_id__in=current_version_ids).delete()
     
     logger.info("refreshed azure built-in template imports")
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