how to enable repository for ubuntu Cloud archive :
I am using Ubuntu 19.10 (Eoan Ermin).
What is the command to enable the repository?
I try with add-apt-repository cloud-archive:stein but this is only supported on bionic
i refer to below documentation : https://docs.openstack.org/install-guide/environment-packages-ubuntu.html (https://docs.openstack.org/install-gu...)