e2e/storage: avoid fmt.Sprintf for single string

[pohly]

What type of PR is this?
/kind cleanup

What this PR does / why we need it:

The fmt.Sprintf call is either redundant (if the format string
contains no format characters) or broken (if it does, because there
are no parameters).

Does this PR introduce a user-facing change?:

NONE

/sig storage
/assign @msau42
/cc @mkimuram

[k8s-ci-robot]

@pohly: GitHub didn't allow me to request PR reviews from the following users: mkimuram.

Note that only kubernetes members and repo collaborators can review this PR, and authors cannot review their own PRs.

In response to this:

What type of PR is this?
/kind cleanup

What this PR does / why we need it:

The fmt.Sprintf call is either redundant (if the format string
contains no format characters) or broken (if it does, because there
are no parameters).

Does this PR introduce a user-facing change?:

NONE

/sig storage
/assign @msau42
/cc @mkimuram

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.

[oomichi]

GetDriverNameWithFeatureTags just returns the resut of fmt.Sprintf as https://github.com/kubernetes/kubernetes/blob/master/test/e2e/storage/drivers/base.go#L99

/lgtm

[msau42]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: msau42, pohly

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[dims]

/milestone v1.13

[neolit123]

/priority backlog