Fix TestRunner.js to account for both --debug and --debug-brk
Fix TestRunner.js to account for both --debug and --debug-brk

Summary:
Fix TestRunner.js to account for both --debug and --debug-brk (the latter from webstorm)
Closes https://github.com/facebook/jest/pull/647

Reviewed By: svcscm

Differential Revision: D2757229

fb-gh-sync-id: efa0e8e6fec100366b3a05acc977f83dafe44eeb

cpojer/jest,Daniel15/jest,cpojer/jest,skovhus/jest,Daniel15/jest,blainekasten/jest,sampepose/jest,bookman25/jest,ncuillery/jest,skawian/jest,mpontus/jest,alvinsj/jest,aaron-goshine/jest,aaron-goshine/jest,skovhus/jest,facebook/jest,yungsters/jest,ncuillery/jest,blainekasten/jest,skawian/jest,yungsters/jest,bookman25/jest,razh/jest,alvinsj/jest,ide/jest,razh/jest,bookman25/jest,mpontus/jest,ide/jest,sampepose/jest,facebook/jest,facebook/jest,skovhus/jest,cpojer/jest,Daniel15/jest,aaron-goshine/jest,ide/jest,blainekasten/jest,mpontus/jest