Add cleanup flag to the helm test runs

This should do a better job of removing the test jobs, that have been
cluttering up our UI.

This also has the added benefit of allowing us to retry these, which
wasn't working before.
9 jobs for add-cleanup-helm-test in 16 minutes and 21 seconds (queued for 1 second)
Status Job ID Name Coverage
  Prepare
passed #91636435
danger-review

00:00:13

 
  Review
passed #91636437
review

00:05:48

passed #91636439
allowed to fail manual
stop_review

00:02:12

 
  Specs
passed #91636442
review_specs

00:05:57

 
  Qa
skipped #91636450
debug_review
failed #91638762
allowed to fail
qa

00:01:25

passed #91636448
review_helm_test

00:00:23

failed #91636446
allowed to fail
qa

00:01:08

 
  Package
passed #91636452
lint_package

00:00:20

 
Name Stage Failure
failed
qa Qa
Digest: sha256:32ce981d919260337dd6417fba621e5bcdfd63fc9a31284ba6b530cd65c91a61
Status: Downloaded newer image for gitlab/gitlab-ee-qa:nightly
bundler: failed to load command: bin/qa (bin/qa)
NoMethodError: undefined method `launch!' for QA::Scenario::Test::Instance:Module
bin/qa:7:in `<top (required)>'
Uploading artifacts...
./gitlab-qa-run-*: found 2 matching files
Uploading artifacts to coordinator... ok
id=91638762 responseStatus=201 Created token=X9mAJ-gH
ERROR: Job failed: exit code 1