Switch from glog to klog

[font]

#695 is WIP, but this switch to use klog is needed in order to enable webhook dependencies in a follow-up PR.

Posting on behalf of @pmorie who did the work.

Fixes #694

[k8s-ci-robot]

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[marun]

@font I guess neither you nor @pmorie noticed that @poothia had already started work on this in #695?

@poothia fyi, you can close yours.

[xunpan]

overall it LGTM

[xunpan]

k8s.io is a third party package. It should be better on top of federation package as indepedent section.

[font]

Agreed. This is a default gofmt placement since there's no space.

[marun]

The convention we've converged on is:

import (
  <system imports (e.g. fmt)>

  <3rd party imports (e.g. glog, errors)>

  <k8s imports (e.g. klog, metav1)>

  <fedv2 imports>
 
  [<test-specific imports>]
)

[font]

@font I guess neither you nor @pmorie noticed that @poothia had already started work on this in #695?

@poothia fyi, you can close yours.

@marun I made a comment about it that it looks like it is WIP and hasn't been updated recently. It's not my intent to take the work from @poothia (apologies!), it was more to see it through since a follow-up PR for the webhook framework which depends on it is forthcoming.

[font]

@marun @xunpan I've pushed a commit that reorders things based on our converged convention. We should really document that in the development guide.

[marun]

Thanks @font and @pmorie!

/lgtm