QA-344: Support docker<->git N:N mapping
QA-344: Support docker<->git N:N mapping

This means that we now have to loop over every repo returned by the mapping from
docker images to git repositories.

Changelog: None
Signed-off-by: Ole Petter <311ee1acef6e516b58238217629109071539b6ed@northern.tech>

mendersoftware/meta-mender-qemu