Vreplication flaky test: make vcopier test non-flaky#6001

Merged

sougou merged 7 commits intovitessio:masterfrom

planetscale:rn-vcopier-flaky-test

Apr 3, 2020

Commits on Mar 30, 2020

Change flaky tests to expect nonTx queries: WIP
rohit-nayak-ps
committed

Commits on Mar 31, 2020

Fixed flakiness
rohit-nayak-ps
committed

Commits on Apr 1, 2020

Commits on Apr 2, 2020

Close unused VREngine and hence related healthcheck streams which were causing races since they continued to run
rohit-nayak-ps
committed
Add rollback to ignored transactions. Rollbacks can occur if a context times out
rohit-nayak-ps
committed
gofmted
rohit-nayak-ps
committed