Update the API design for PartitionableDevice

[cici37]

• One-line PR description:

• Issue link:

• Other comments:

[cici37]

/assign @johnbelamaric

[johnbelamaric]

/approve
/assign @thockin @dom4ha
/cc @pohly @mortent @klueska

@cici37, @thockin and I discussed this last week.

In the Composability in ResourceSlice APIs document, we agreed to move all of the new fields under Device in a new v1beta2 API. The simplest thing to do to enable a clean round tripping is to add all the fields to BasicDevice in v1beta1, then the v1beta2 is easy to implement. There is no benefit to introducing CompositeDevice at this time, and it makes round tripping very challenging.

[pohly]

/lgtm

It affects the "Rollout, Upgrade and Rollback Planning", but as that's for beta there is no need to change anything right now.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cici37, johnbelamaric, pohly

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• keps/sig-scheduling/OWNERS [johnbelamaric]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment