move to klog, and refactoring around error handling

[krishchow]

This PR removes references to glog, and starts the move to logging with klog/v2. Additionally, this starts the work on refactoring error handling so we utilize wrapping and separate logging from error creation.

[k8s-ci-robot]

Hi @krishchow. Thanks for your PR.

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[krishchow]

cc @wlan0 @sajanjswl

[wlan0]

/ok-to-test

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: krishchow, sajanjswl, wlan0

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[wlan0]

/lgtm