Fix resize-related sanity test failures

[judemars]

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:
Our sanity tests are currently failing 4 test cases: 1 because of go/pdcsi-oss-driver/issues/990 to be addressed in a follow up in another repo, and 3 others with the error:

Could not determine if filesystem \"/tmp/csi/stage\" needs to be resized: failed to parse size of device /dev/disk/fake-path

This PR fixes the latter 3 failures by mocking out the resize method.

Note this also required moving deviceutils into its own pkg to avoid a circular dependency from mountmanager (device utils) -> resize -> mountmanager (windows).

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

[k8s-ci-robot]

Hi @judemars. 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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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.

[mattcary]

/ok-to-test
/lgtm
/approve

(there's a bigger discussion around sanity checks on another thread)

[judemars]

/retest

[judemars]

/retest

[mattcary]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: judemars, mattcary

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