Bugfix: Clear Stripe data after every test

Previously we were clearing only after the entire suite so that we could make
things faster, but in proper TDD style, the environment should be cleared after
every test.

We were running into problems with the state of Stripe persisting between tests
and so we decided to clear after every test.

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Change-Id:     I25bad247fd0f6ea8a79e63e07132930aa9ee320e
Signed-off-by: Jeff Felchner <accounts+git@thekompanee.com>
Version Bump to 0.47.0