Set kubeconfig volume path for kube-vip static pod based on OS

[abhay-krishna]

For Bottlerocket, the admin kubeconfig volume path is /var/lib/kubeadm/admin.conf, but in our templates, this field is set as /etc/kubernetes/admin.conf for all OS families. During cluster creation, the CAPI kubeadm bootstrap controller patches the kube-vip static pod manifest to change it to the correct hostPath value for Bottlerocket. Instead of doing that, we could set it to the correct path ourselves since we know the OS at the time of cluster creation itself. This migration will help when we make the kubeconfig path dynamic based on the Kubernetes version in #7368.

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[g-gaston]

I thought we weren't doing br in baremetal anymore?

[abhay-krishna]

We won't be doing it for Kubernetes 1.29 onwards. This is just for the existing Kubernetes versions. I am going to remove this hardcoded value so that we can control the path from EKS-A provider templates. So we need this change across all providers to maintain the current behavior.

[abhinavmpandey08]

/lgtm
/woof
/approve

[eks-distro-bot]

@abhinavmpandey08:

In response to this:

/lgtm
/woof
/approve

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[abhay-krishna]

/approve

[eks-distro-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: abhay-krishna, abhinavmpandey08

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:

• OWNERS [abhay-krishna,abhinavmpandey08]

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