Add import to systrace config file.
Add import to systrace config file.

This CL updates the systrace config file to include the tr.importer.Import
module.

TBR=ccraik@google.com

Review URL: https://codereview.chromium.org/1303463003

SummerLW/Perf-Insight-Report,sahiljain/catapult,catapult-project/catapult-csm,zeptonaut/catapult,catapult-project/catapult,SummerLW/Perf-Insight-Report,benschmaus/catapult,sahiljain/catapult,modulexcite/catapult,zeptonaut/catapult,SummerLW/Perf-Insight-Report,modulexcite/catapult,catapult-project/catapult-csm,0x90sled/catapult,sahiljain/catapult,SummerLW/Perf-Insight-Report,SummerLW/Perf-Insight-Report,benschmaus/catapult,catapult-project/catapult,catapult-project/catapult-csm,catapult-project/catapult-csm,scottmcmaster/catapult,0x90sled/catapult,catapult-project/catapult,sahiljain/catapult,zeptonaut/catapult,catapult-project/catapult-csm,0x90sled/catapult,benschmaus/catapult,catapult-project/catapult,scottmcmaster/catapult,sahiljain/catapult,modulexcite/catapult,benschmaus/catapult,benschmaus/catapult,catapult-project/catapult,catapult-project/catapult,benschmaus/catapult,benschmaus/catapult,SummerLW/Perf-Insight-Report,sahiljain/catapult,catapult-project/catapult-csm,scottmcmaster/catapult,catapult-project/catapult-csm,catapult-project/catapult