This is required for #9156

Switching from https://github.com/kubernetes/klog to https://github.com/google/glog should be easy, as klog is a newer fork of glog. klog supports the ability to specify log destinations, which is why it is important for #9156

This should be achievable mostly a search & replace of glog to klog, but initialization is slightly different. See this PR I proposed & abandoned last year: #5318 - though that was with klog v1, and now klog v2 is available. Here's an example of klog usage:

https://github.com/kubernetes/klog/blob/master/examples/log_file/usage_log_file.go