kubectl: Use Server-Side-Apply by default

[alexzielenski]

Enhancement Description

• One-line enhancement description (can be used as a release note): Changes kubectl to use Server-Side-Apply by default
• Kubernetes Enhancement Proposal: None yet, PR forthcoming
• Discussion Link: N/A
• Primary contact (assignee): @alexzielenski
• Responsible SIGs: cli, api-machinery
• Enhancement target (which target equals to which milestone):
  • Alpha release target (x.y): 1.28 (for --server-side=auto; SSA has been GA since 1.22)
  • Beta release target (x.y): TBD
  • Stable release target (x.y):
• Alpha
  • KEP (k/enhancements) update PR(s):
    • KEP-3805: Server-side apply by default in kubectl #3831
  • Code (k/k) update PR(s):
    • KEP-3805 - Add Support for server-side=auto kubernetes#115936
  • Docs (k/website) update(s):
    • [WIP]: Add Placeholder for Server Side Auto Feature Blog website#39814
• Beta
  • KEP (k/enhancements) update PR(s):
  • Code (k/k) update PR(s):
  • Docs (k/website) update(s):

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

[alexzielenski]

/sig cli

[KnVerey]

/lead-opted-in

We're still finalizing what the process framing should look like given that this is about a GA feature but still requires a risk assessment, staged rollout plan, etc. Current thinking is we'll frame what already exists as alpha and the changes as betas->GA progression. So, tenatively:
/stage beta

[KnVerey]

/milestone v1.27
/label lead-opted-in

[marosset]

Hello @alexzielenski 👋, Enhancements team here.

Just checking in as we approach enhancements freeze on 18:00 PDT Thursday 9th February 2023.

This enhancement is targeting for stage beta for v1.27 (correct me, if otherwise)

Here's where this enhancement currently stands:

• KEP readme using the latest template has been merged into the k/enhancements repo.
• KEP status is marked as implementable for latest-milestone: v1.27
• KEP readme has a updated detailed test plan section filled out
• KEP readme has up to date graduation criteria
• KEP has a production readiness review that has been completed and merged into k/enhancements.

For this enhancement, it looks like #3831 will address the remaining requirements.

The status of this enhancement is marked as at risk. Please keep the issue description up-to-date with appropriate stages as well.
Thank you!

[KnVerey]

/remove-label lead-opted-in
/remove-milestone 1.27

We've decided this requires more time for discussion than available ahead of enhancement freeze for this release.