RPMs metadata V2

[guillermodotn]

• Update Rpms.add() to accept Location objects
• Implement v2.0 serialization for all metadata classes (images, rpms done)
• Implement v2.0 deserialization for all metadata classes (images, rpms done)
• Support v1.2 serialization/deserialization (backward compat) (images, rpms done)
• Write unit tests for each metadata class (images, rpms done)

[lubomir]

Looks good to me.

I'm kinda curious how much it's going to increase the size of the file, but that is likely a cost we need to pay anyway.

One potential improvement not related to distributed data is the sigkey. The metadata can only represent a single key, but in rpm v6 can be signed with multiple keys. But that is a separate concern not related to this specific effort.

[guillermodotn]

I estimate up to 3x depending of the local path to remote/OCI ratio of the file.

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One potential improvement not related to distributed data is the sigkey. The metadata can only represent a single key, but in rpm v6 can be signed with multiple keys. But that is a separate concern not related to this specific effort.

GTK