Replace deis references in annotations

[jdolitsky]

See https://github.com/oras-project/oras-go/search?q=deis

cc @shizhMSFT

[shizhMSFT]

Any suggestions on the new annotation keys? /cc @SteveLasker

[SteveLasker]

How about cncf.oras.*
What are these used for?

[shizhMSFT]

They are used for compressed directories. If we adopt oras-project/oras#178, then we don't need to bother those annotations.

[SteveLasker]

Of course, I'd like to see #178, but I wouldn't block and seems you can use cncf.oras, however that does presume the project is accepted, so I'd suggest holding this annotation for now. It also makes it interesting how these would work if a new client is looking for cncf.oras and it discovers deis.oras?
Are you thinking of maintaining some backwards compat?

[bacongobbler]

Is there a risk to users if these annotations are changed? As in, will Helm and other applications using oras be able to unpack charts using these annotations?

I'm okay with changing the annotation, but if it breaks something I'd like to know so we can inform users of breaking changes to helm chart push/helm chart pull in the next update.

[jdolitsky]

@bacongobbler Helm's use of oras-go (both the old version and the one in the HIP 6 PR) does not do anything with these annotations, so we are safe here

[FeynmanZhou]

I think we can add the website domain name as an option in annotations, then we have two options:

• cncf.oras
• land.oras

How about we vote one and then provide a backward compact solution? @SteveLasker @bacongobbler @shizhMSFT @sajayantony @yizha1