Fix test container creation/cleanup for tests
Fix test container creation/cleanup for tests

Clean up the test container after a successful test run, and remove the
the bdcs container before re-creating it. With that, `make end-to-end-test`
works several times in a row.

jkozol/welder-web,weldr/welder-web,weldr/welder-web,weldr/welder-web,jkozol/welder-web,weldr/welder-web,jkozol/welder-web,jkozol/welder-web