Cherrypick pull request #884 from shuaich/remove_elevated_permission to release-0.5

[shuaich]

Description

Remove elevated permissions from metrics-server

Testing

make test-unit
make test-version
make test-e23

What this PR does / why we need it:
This PR cherry picks #884 from master branch.
With this PR, we are able to remove elevated permissions from metrics-server.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
None

[k8s-ci-robot]

Hi @shuaich. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[shuaich]

/assign @dgrisonnet
/assign @serathius
/assign @s-urbaniak

Could you please take a look at this PR?

[dgrisonnet]

/ok-to-test
/lgtm

/assign @serathius

[serathius]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: serathius, shuaich

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