[JIT] Fix JIT triage workflow (#41170)
Summary:
**Summary**
This commit fixes the JIT triage workflow based on testing done in my
own fork.
**Test Plan**
This commit has been tested against my own fork. This commit is
currently at the tip of my master branch, and if you open an issue in my
fork and label it JIT, it will be added to the Triage Review project in
that fork under the Needs triage column.
*Old issue that is labelled JIT later*
<img width="700" alt="Captura de Pantalla 2020-07-08 a la(s) 6 59 42 p m" src="https://user-images.githubusercontent.com/4392003/86988551-5b805100-c14d-11ea-9de3-072916211f24.png">
*New issue that is opened with the JIT label*
<img width="725" alt="Captura de Pantalla 2020-07-08 a la(s) 6 59 17 p m" src="https://user-images.githubusercontent.com/4392003/86988560-60dd9b80-c14d-11ea-94f0-fac01a0d239b.png">
Pull Request resolved: https://github.com/pytorch/pytorch/pull/41170
Differential Revision: D22460584
Pulled By: SplitInfinity
fbshipit-source-id: 278483cebbaf3b35e5bdde2a541513835b644464
