Docker Manifest list support

Sonatype Nexus 3.22+, and probably other docker registry solutions, now serves manifest lists.

https://issues.sonatype.org/browse/NEXUS-18546

Apache Mesos does not support yet this part of the Image Manifest V2S2 spec.

https://docs.docker.com/registry/spec/manifest-v2-2/#manifest-list

This is not a critical issue as Sonatype Nexus is not a dependency of Apache Mesos, but as we cannot use Nexus > 3.21.2, this leads to side security issues.

https://support.sonatype.com/hc/en-us/articles/360046233714

Apache Mesos should support the whole Image Manifest V2S2 specification.