text: Title: Upgrade klog to v2
  Body: ### What you would like to be added?
  
  I would like to upgrade `klog` version to v2
  
  ### Why is this needed?
  
  As we discussed in https://github.com/kubeflow/katib/pull/2463#discussion_r1879643488, a dedicated issue for upgrading `klog` version is needed. 
  
  And also, we rely on both v1 and v2 version, which is not neat enough and may need to be unified into the same version.
  
  https://github.com/kubeflow/katib/blob/336396436aa49de730887456028e3daa1465e500/go.mod#L30
  
  https://github.com/kubeflow/katib/blob/336396436aa49de730887456028e3daa1465e500/go.mod#L153
  
  cc👀 @kubeflow/wg-automl-leads @tariq-hasan @helenxie-bit @doris-xm
  
  /remove-label lifecycle/needs-triage
  /help-wanted
  /good-first-issue
  
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