Add juliusvonkohout to wg-manifests-leads group

[juliusvonkohout]

Follow up of #2493
See also kubeflow/internal-acls#584 and #2432

Root Approver requirements from https://github.com/kubeflow/community/blob/master/wg-manifests/charter.md

The goal of the requirements is to quantify the main pillars that we documented
above. The high level reasoning is that approvers should have lead efforts and
have expertise in the different processes and artefacts maintained in this repo
as well as be invested in the community of the WG.

• Need to be a root reviewer - Yes
• Have been a WG liaison for a KF release - Yes for the Security WG
• Has at least 3 substantial PRs merged for /common
  • I.e. updating the versions of Istio, Dex or Knative - 1. Rootless Kubeflow part one (istio-cni) #2455
  • I.e. update manifests to work with newer versions of kustomize - 2. fixes knative for kustomize 5. Especially only one patch per file #2515 3. Fix istio 1.16 and 1.17 and istio-cni 1.17 for kustomize 5 #2537
• Has at least 2 substantial PRs merged for /testing - 1. Rootless Kubeflow part one (istio-cni) #2455 2. Add tests for rootless containers #2546
• Has at least 1 substantial PR merged for /proposals - 1. Proposal for rootless Kubeflow #2527
• Has been an active participant in issues and PRs for at least 3 months - Yes
• Has attended at least 50% of Manifests WG meetings - Yes

In addition i am also owner of manifests/contrib , especially Ray and networkpolicies and have several other small PRs as for example

#2357
#2348
#2298
#2013
#2329
#2383

[juliusvonkohout]

/assign @kimwnasptd

[jbottum]

@kimwnasptd this seems like a valid request and I would like your input. If/when this is approved, what would be Julius' titles - Manifest WG Tech Lead, reviewer, approver and maintainer ? How strict are the requirements and responsibilities (attending WG meetings, etc.)?

[DomFleischmann]

@kimwnasptd I think this would be very beneficial, what do you think, could we proceed with this?

[kimwnasptd]

As discussed in the last Manifests WG meetings, this PR has been long overdue. @juliusvonkohout thank you very much for all your contributions and really looking forward to next steps!

/lgtm
/approve

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: juliusvonkohout, kimwnasptd

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