Before this change, testing/tps had 19 linter errors. These have been resolved.
Differential Revision: https://phabricator.services.mozilla.com/D15846
--HG--
extra : moz-landing-system : lando
This patch disables a couple of tests, removes old async support from TPS,
and puts more effort into preventing Syncs while TPS is running, and
removed an unused import.
Differential Revision: https://phabricator.services.mozilla.com/D8692
--HG--
extra : moz-landing-system : lando