🐛 make listObjByGVK resilient

[ykakarap]

What this PR does / why we need it:

This PR makes the listObjByGVK function resilient to temporary network problems. This function is used during the upgrade flow and the upgrade can potentially break because of this.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #6261

[killianmuldoon]

/lgtm

[ykakarap]

/hold

To see if we it is okay to address the first point mentioned here in the same PR: #6261 (comment)

[ykakarap]

/hold cancel

[sbueringer]

/lgtm

[fabriziopandini]

/lgtm
/approve
/cherry-pick release-1.1

[k8s-infra-cherrypick-robot]

@fabriziopandini: once the present PR merges, I will cherry-pick it on top of release-1.1 in a new PR and assign it to you.

In response to this:

/lgtm
/approve
/cherry-pick release-1.1

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: fabriziopandini

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• OWNERS [fabriziopandini]

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[k8s-infra-cherrypick-robot]

@fabriziopandini: new pull request created: #6268

In response to this:

/lgtm
/approve
/cherry-pick release-1.1

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.