NIFI-3483 Added import statement to resolve failing tests.

[alopresto]

PR 1566 added NumberFormat to fix a locale-dependent test but missed the import statement.

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[phrocker]

+1 Resolves missing import.

[alopresto]

Thanks for the quick verification. I need a committer but I think @apiri is on it.

[apiri]

Yeah, sorry about this. Serves me right for trying to eyeball the merge. Will get this in. Thanks

[alopresto]

Aldrin's having a long day. The merge was successful but did not include the magic incantation to close the PR. Closing manually. Thanks all for the quick response.