perform upgrade from luminous to nautilus.
All dev* references are not needed anymore in stable-4.0
Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>
On stable-4.0 branch we don't want to use dev setup but stable
release (nautilus).
Also update the container image tag to reflect this change.
Signed-off-by: Dimitri Savineau <dsavinea@redhat.com>
This file is becoming too big, let's isolate the update related code in
a dedicated tox configuration file.
Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>