docker v2: Disable v1 support and add support for manifest unit type
- Runcible: update the docker importer to disable V1.
- Runcible: update to support a new docker_manifest unit type.
These 2 things could be broken in to separate issues; however, they are very small in change and will allow development on multiple aspects of the migration to continue.
fixes #13460 - docker v2 - disable v1 support & introduce docker_manifest unit type
This commit makes 2 changes:
1. update the docker importer to support the 'enable_v1' flag
2. introduce the docker_manifest unit which is being added with