Add filtering for JUnit to correctly produce pdcsi_junit.xml file

[pwschuurman]

What type of PR is this?

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/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: Test runners that rely on parsing pdcsi_junit.xml are not working. This was changed in #1911 when the XMLName was removed for an output struct.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[k8s-ci-robot]

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[pwschuurman]

/retest

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: pwschuurman

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[k8s-ci-robot]

@pwschuurman: 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	da5aae9	link	true	/test pull-gcp-compute-persistent-disk-csi-driver-e2e
pull-gcp-compute-persistent-disk-csi-driver-kubernetes-integration	da5aae9	link	true	/test pull-gcp-compute-persistent-disk-csi-driver-kubernetes-integration

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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[k8s-ci-robot]

PR needs rebase.

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-sigs/prow repository.