Podman is in the official debian repositories since debian 10, install
it from there instead of using a third-party repository.
Related: OS#5365
Change-Id: I01549915d2c8dfda5fa605a014a304229c3078f0
It's really annoying that OBS uses Debian_8.0 and Debian_9.0 (for 8.x
and 9.x) and then Debian_10 for 10.x. Let's work around this by some
conditional vars_file trickery, hopefully once and for all.
Change-Id: I45c4752774f44332b3f9aaf875f49043c03ec5ca
podman has one particularly interesting feature which docker
rejected years ago: The ability to run a container in a pre-existing
namespace. This is quite useful for some of our test setups,
particularly those that involve hdlc net-devices
Change-Id: I4b14599f39c07ec83fa4222f9d040d443caae3e6