Fix linter errors

recircle/instance/views.py

-from instance.models import Instance
 from instance.serializers import InstanceSerializer, FlavorSerializer
-from django.http import Http404
+from django.http import Http40
+from django.conf import settings
 from rest_framework.views import APIView
 from rest_framework.response import Response
 from rest_framework import status
@@ -9,7 +9,6 @@ from interface_openstack.implementation.vm.instance import (
                                                         )
 from template.models import InstanceTemplate
 from instance.models import Instance, Flavor, Lease
-from django.contrib.auth.models import User
 
 
 class InstanceList(APIView):
@@ -21,7 +20,7 @@ class InstanceList(APIView):
         data = request.data
         template = InstanceTemplate.objects.get(pk=data["template"])
         flavor = Flavor.objects.get(pk=data["flavor"])
-        lease = lease.objects.get(pk=data["lease"])
+        lease = Lease.objects.get(pk=data["lease"])
 
         newInstance = Instance.create_instance_from_template(
             params={"name": data["name"],

interface_openstack @ 7b264753

-Subproject commit 068a7155cd97ba5c6d0a06b9c0a6274b22fe8d3c
+Subproject commit 7b2647531e54da62fcf1db4c61a5e0530e977da4