#4340-Migrate vertical-pod-autoscaler to k8s.io/klog/v2-Part1

[mallow111]

Details: #4340
After making the change, go mod still has klog v1.0 dependencies:

% go mod graph |grep klog

k8s.io/autoscaler/vertical-pod-autoscaler k8s.io/[email protected]
k8s.io/autoscaler/vertical-pod-autoscaler k8s.io/klog/[email protected]
k8s.io/[email protected] k8s.io/[email protected]
k8s.io/[email protected] k8s.io/[email protected]
k8s.io/[email protected] k8s.io/[email protected]
k8s.io/[email protected] k8s.io/[email protected]
k8s.io/[email protected] k8s.io/[email protected]
k8s.io/klog/[email protected] github.com/go-logr/[email protected]
k8s.io/[email protected] github.com/go-logr/[email protected]
k8s.io/[email protected] k8s.io/[email protected]
This might be caused by implicit dependencies, e.g. vertical-pod-autoscaler needs to use component-base, while k8s.io/[email protected] k8s.io/[email protected]

% go mod graph |grep vertical-pod-autoscaler
k8s.io/autoscaler/vertical-pod-autoscaler github.com/beorn7/[email protected]
k8s.io/autoscaler/vertical-pod-autoscaler github.com/golang/[email protected]
k8s.io/autoscaler/vertical-pod-autoscaler github.com/prometheus/[email protected]
k8s.io/autoscaler/vertical-pod-autoscaler github.com/prometheus/[email protected]
k8s.io/autoscaler/vertical-pod-autoscaler github.com/prometheus/[email protected]
k8s.io/autoscaler/vertical-pod-autoscaler github.com/stretchr/[email protected]
k8s.io/autoscaler/vertical-pod-autoscaler golang.org/x/[email protected]
k8s.io/autoscaler/vertical-pod-autoscaler golang.org/x/[email protected]
k8s.io/autoscaler/vertical-pod-autoscaler k8s.io/[email protected]
k8s.io/autoscaler/vertical-pod-autoscaler k8s.io/[email protected]
k8s.io/autoscaler/vertical-pod-autoscaler k8s.io/[email protected]
k8s.io/autoscaler/vertical-pod-autoscaler k8s.io/[email protected] ---> needs this dependency
k8s.io/autoscaler/vertical-pod-autoscaler k8s.io/[email protected]
k8s.io/autoscaler/vertical-pod-autoscaler k8s.io/klog/[email protected]
k8s.io/autoscaler/vertical-pod-autoscaler k8s.io/[email protected]
k8s.io/autoscaler/vertical-pod-autoscaler k8s.io/[email protected]

This PR is just to update go.mod to klog/[email protected] and make 1 file to use this new version.The reason to pick v2.9.0 is to be consistent with cluster-autoscaler's klog version: https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler/go.mod#L37.

Later on will send more PRs to update modules under vertical-pod-autoscaler to use klog/v2, this way we can avoid big code change.

[mallow111]

@mrueg can you help to review as well, thanks!

[jbartosik]

/lgtm
/approve

[k8s-ci-robot]

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