start-locust.sh fails due to non existing TIMESTAMP folder

[adrelino]

test-contexts/validation-teastore_with_locust/start-locust.sh

Line 79 in f857263

TIMESTAMP="${TEASTORE_BASEDIR}/examples/locust/TIMESTAMP"

./start-locust.sh: 80: cannot create teastore/examples/locust/TIMESTAMP: Directory nonexistent