Add python stack tracing option on on-demand flow (#80919)
Summary:
Changes:
1. add an option in Config; can use 'PYTHON_STACK_TRACE=true' option (via .conf)
2. deliver PYTHON_STACK_TRACE value to kineto_client_interface start()
3. abstract class also changed.
Test Plan:
1. launch a python test case with the following command for on-demand flow:
echo -e "PYTHON_STACK_TRACE=true" > /tmp/scott_kineto.conf && dyno gputrace --gputrace_duration 300ms --gpuconf /tmp/scott_kineto.conf
2. Then, we can see with_stack enabled as intended from output log:
INFO:2022-06-27 15:00:16 1009443:1011716 kineto_client_interface.cpp:22] withStack : 1
Differential Revision: D37410204
Pull Request resolved: https://github.com/pytorch/pytorch/pull/80919
Approved by: https://github.com/robieta
