Fix TestExtractAndDefaultParameters test.

[jeremyje]

What type of PR is this?
/kind failing-test

What this PR does / why we need it:
Fix this problem.

go version
go version go1.14.4 linux/amd64
go test ./pkg/...
--- FAIL: TestExtractAndDefaultParameters (0.00s)
    --- FAIL: TestExtractAndDefaultParameters/real_values,_checking_balanced_pd (0.00s)
        parameters_test.go:109: ExtractAndDefaultParameters(map[disk-encryption-kms-key:foo/key replication-type:regional-pd type:pd-balanced]) = {pd-balanced regional-pd foo/key map[]}; expected params: {pd-balanced regional-pd foo/key map[]}
FAIL
FAIL    sigs.k8s.io/gcp-compute-persistent-disk-csi-driver/pkg/common   0.003s
ok      sigs.k8s.io/gcp-compute-persistent-disk-csi-driver/pkg/gce-cloud-provider/compute       (cached)
?       sigs.k8s.io/gcp-compute-persistent-disk-csi-driver/pkg/gce-cloud-provider/metadata      [no test files]
ok      sigs.k8s.io/gcp-compute-persistent-disk-csi-driver/pkg/gce-pd-csi-driver        (cached)
?       sigs.k8s.io/gcp-compute-persistent-disk-csi-driver/pkg/mount-manager    [no test files]
?       sigs.k8s.io/gcp-compute-persistent-disk-csi-driver/pkg/resizefs [no test files]
FAIL

Which issue(s) this PR fixes:
NONE

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

[k8s-ci-robot]

Hi @jeremyje. 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.

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[mattcary]

/ok-to-test

[mattcary]

/lgtm

good catch, thank you.

[mattcary]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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