fix: backport fixes from query close#4704

Merged

stevenpyzhang merged 2 commits intoconfluentinc:5.3.xfrom stevenpyzhang:backport-query-close-5.3

Mar 6, 2020

+167-13

Commits on Mar 4, 2020

fix: idempotent terminate that can handle hung streams (confluentinc#4643 )

rodesai
authored and
stevenpyzhang
committed
fix: don't cleanup topics on engine close (confluentinc#4658 )

authored and
stevenpyzhang
committed