Recommended update for podman

This update for podman fixes the following issues:

- Added README.SUSE about current support status (jsc#SLE-9112, jsc#CAASP-60)
- Configure br_netfilter for podman automatically (bsc#1165738)

This update was imported from the SUSE:SLE-15-SP1:Update update project.

Fixed bugs
bnc#1165738
[MicroOS] br_netfilter is not loaded but needed for podman, works on Leap 15.1
Selected Binaries
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