Use strings.Fields for whitespace splitting to fix issues with strings.Split in case of multiple consecutive spaces

[hungnguyen243]

Use strings.Fields for whitespace splitting to fix issues with strings.Split in case of multiple consecutive spaces

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespaces from that line:

/kind api-change

/kind bug

/kind cleanup
/kind design
/kind documentation
/kind failing-test
/kind feature
/kind flake

What this PR does / why we need it:
strings.Split(s, " ") hides potential parsing bugs in case we have multiple spaces, so we're replacing it with strings.Fields(s) (https://pkg.go.dev/strings#Fields), which splits based one or more consecutive spaces.
Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

Fix regex parsing issues while setting up caching

[k8s-ci-robot]

@hungnguyen243: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-gcp-compute-persistent-disk-csi-driver-e2e-windows-2019	fd0122c	link	false	/test pull-gcp-compute-persistent-disk-csi-driver-e2e-windows-2019
pull-gcp-compute-persistent-disk-csi-driver-e2e-windows-2022	fd0122c	link	false	/test pull-gcp-compute-persistent-disk-csi-driver-e2e-windows-2022

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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[Sneha-at]

/lgtm

[sunnylovestiramisu]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hungnguyen243, sunnylovestiramisu

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[hungnguyen243]

/cherry-pick release-1.17

[k8s-infra-cherrypick-robot]

@hungnguyen243: new pull request created: #2008

In response to this:

/cherry-pick release-1.17

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