QA: Mark KeepGoing tests as WIP

KeepGoing is not enabled everywhere and is still being A/B tested, so
the tests will fail 50% of the time. Let's leave this @wip until the
feature is on 100% of the time.

Removed target envs for now

Change-Id: I41708df4cb6d8467214152ff2c41e871fbac2ca9