Skip xfs test for GCE test skip

[amacaskill]

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:

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:
Skip xfs test for GCE test skip. We already do this for GKE, but not for GCE. The XFS test has been failing on the provider testgrid, which runs on GCE, for over 1 year.

Does this PR introduce a user-facing change?:

NONE

[mattcary]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: amacaskill, saikat-royc

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