[experimental] Add telemetry_mini.py
[experimental] Add telemetry_mini.py

Script has been useful to diagnose memory regressions.

BUG=chromium:724032

Review-Url: https://codereview.chromium.org/2972013002

benschmaus/catapult,benschmaus/catapult,catapult-project/catapult,benschmaus/catapult,catapult-project/catapult,catapult-project/catapult,benschmaus/catapult,benschmaus/catapult,catapult-project/catapult-csm,catapult-project/catapult-csm,benschmaus/catapult,catapult-project/catapult-csm,benschmaus/catapult,catapult-project/catapult,catapult-project/catapult,catapult-project/catapult-csm,catapult-project/catapult-csm,catapult-project/catapult-csm,catapult-project/catapult,catapult-project/catapult,catapult-project/catapult-csm