Summary:
It turns out puma was erroring on the GK field inside the log json, because of improperly escaped " in the fields.
To simplify it I'm changing it to use simple comma separated key:value pairs, since they are always plain string and boolean values.
"gatekeepers":"TEST_PASSING_GK:false,TEST_FAILING_GK:false,devtools_sonar_team:false"
Reviewed By: passy
Differential Revision: D13782283
fbshipit-source-id: 3f331dc9189b1a57f69a2af0d4393baf45e1fa55