SHR-639 Stop pyexecutor when ppid == 1
SHR-639 Stop pyexecutor when ppid == 1

Change-Id: I0f3b4dea0168dfdbcb8cb1188acfd755446da861

deepsense-io/seahorse-workflow-executor,deepsense-io/seahorse-workflow-executor,deepsense-io/seahorse-workflow-executor,deepsense-io/seahorse-workflow-executor