retry(func, retries=7, description=None), RetriesExhaustedError, resilient
login, book_class and get_my_bookings that re-read the card before a
repeat and count a booking only when the page confirms it, --retries option,
step-9 console image, seeded chaos tests at 50 percent failure and
container tests against failing local fixtures.
Task: MIL-007#1
Task: MIL-007#2
Task: MIL-007#3
Task: MIL-007#4
