test-run: drop 'checksum' machinery

Bump test-run to new version with the following improvements:

  - drop 'checksum' machinery (tarantool/test-run#316)
  - rerun fragile tests only with status == 'fail'

NO_DOC=testing stuff
NO_CHANGELOG=testing stuff

test-run @ 5eadc166

-Subproject commit 1689f589ebe725bdea98809c00f554c7ff223419
+Subproject commit 5eadc16619066a65800475e181a28a81295fc8f3