replace bytes.Compare() with bytes.Equal()

[chendotjs]

What type of PR is this?
/kind cleanup

What this PR does / why we need it:
replace bytes.Compare() with bytes.Equal(), more idiomatic

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

NONE

[k8s-ci-robot]

Hi @chendotjs. Thanks for your PR.

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[chendotjs]

/assign @mikedanese @saad-ali
PTAL, thanks

[chendotjs]

/assign @deads2k
thanks

[chendotjs]

/assign @liggitt just sparing a few minutes, thanks

[liggitt]

there are 11 places we do bytes.Compare ... == or !=

can we replace them all?

[chendotjs]

thanks for your advice, I have fixed them all. @liggitt

[liggitt]

/lgtm
/approve
/ok-to-test

[liggitt]

/priority backlog

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: chendotjs, liggitt

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