Upgrade container runtime versions

[afbjorklund]

Umbrella issue, for all the container runtimes:

• Docker 18.09.7 (Upgrade Docker, from 18.09.6 to 18.09.7 #4657) Docker: 18.09.8 (Upgrade Docker, from 18.09.7 to 18.09.8 #4818)
  containerd v1.2.6 (Upgrade Docker, from 18.09.6 to 18.09.7 #4657)

• Podman 1.4.4 (Upgrade Podman to 1.4 #4610)
  cri-o 1.15.0 (Upgrade crio to 1.15.0 #4703)

Since they share runc, want to do this at once ?

• runc v1.0.0-rc8 (Upgrade Docker, from 18.09.6 to 18.09.7 #4657)

[afbjorklund]

Currently docker is setting the versions of containerd and runc, even though we build those separately.

[afbjorklund]

cri-o is stuck in Jenkins somehow, but seems to be working locally. Merged it anyway, eventually.

[afbjorklund]

All done!

[afbjorklund]

New Docker: 18.09.8 (#4818)