DRA: Variables in CEL

[cici37]

Enhancement Description

• One-line enhancement description (can be used as a release note): Extend the CEL selector to support variables in DRA.
• Kubernetes Enhancement Proposal:
• Discussion Link: DRA: CEL Usability Improvements kubernetes#125826
• Primary contact (assignee): cici37
• Responsible SIGs: wg-device-management
• Enhancement target (which target equals to which milestone):
  • Alpha release target (x.y):
  • Beta release target (x.y):
  • Stable release target (x.y):
• Alpha
  • KEP (k/enhancements) update PR(s):
  • Code (k/k) update PR(s):
  • Docs (k/website) update PR(s):

Please keep this description up to date. This will help the Enhancement Team to track the evolution of the enhancement efficiently.

[cici37]

/cc @johnbelamaric @pohly
/wg device-management

[pohly]

/retitle DRA: CEL variables

• "Extend" is redundant, pretty much all KEPs are extensions...
• Right now this might be about CEL selectors, but we already know that a CEL match expression is a likely next step.

Feature gate then can be DRACELVariables. Capitalization isn't great, though.

[johnbelamaric]

/retitle DRA: Variables in CEL

to avoid the "DRACEL" ugliness in FG but keep the names aligned

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