Cap Django again
The detail context on why we need to cap Django version again
is explained in
@@ -11,7 +11,7 @@ pbr!=2.1.0,>=2.0.0 # Apache-2.0
# Horizon Core Requirements
Babel!=2.4.0,>=2.3.4 # BSD
debtcollector>=1.2.0 # Apache-2.0
-Django>=2.2 # BSD
+Django>=2.2,<3.0 # BSD
django-compressor>=2.0 # MIT
django-debreach>=1.4.2 # BSD License (2 clause)
django-pyscss>=2.0.2 # BSD License (2 clause)
