/usr/share/checkbox/plugins/ is in checkbox 0.13.7.
This file is owned by root:root, with mode 0o755.
..
/usr/share/checkbox/plugins/apport_prompt.py
/usr/share/checkbox/plugins/attachment_info.py
/usr/share/checkbox/plugins/backend_info.py
/usr/share/checkbox/plugins/begin_prompt.py
/usr/share/checkbox/plugins/client_info.py
/usr/share/checkbox/plugins/datetime_info.py
/usr/share/checkbox/plugins/delay_prompt.py
/usr/share/checkbox/plugins/error_prompt.py
/usr/share/checkbox/plugins/final_prompt.py
/usr/share/checkbox/plugins/gather_prompt.py
/usr/share/checkbox/plugins/intro_prompt.py
/usr/share/checkbox/plugins/jobs_info.py
/usr/share/checkbox/plugins/jobs_prompt.py
/usr/share/checkbox/plugins/launchpad_exchange.py
/usr/share/checkbox/plugins/launchpad_prompt.py
/usr/share/checkbox/plugins/launchpad_report.py
/usr/share/checkbox/plugins/local_suite.py
/usr/share/checkbox/plugins/lock_prompt.py
/usr/share/checkbox/plugins/manual_test.py
/usr/share/checkbox/plugins/message_info.py
/usr/share/checkbox/plugins/metric_test.py
/usr/share/checkbox/plugins/persist_info.py
/usr/share/checkbox/plugins/proxy_info.py
/usr/share/checkbox/plugins/recover_prompt.py
/usr/share/checkbox/plugins/remote_suite.py
/usr/share/checkbox/plugins/report_prompt.py
/usr/share/checkbox/plugins/resource_info.py
/usr/share/checkbox/plugins/scripts_info.py
/usr/share/checkbox/plugins/server_info.py
/usr/share/checkbox/plugins/shell_test.py
/usr/share/checkbox/plugins/sleep_info.py
/usr/share/checkbox/plugins/submission_info.py
/usr/share/checkbox/plugins/subunit_report.py
/usr/share/checkbox/plugins/suites_prompt.py
/usr/share/checkbox/plugins/system_info.py
/usr/share/checkbox/plugins/tests_prompt.py
/usr/share/checkbox/plugins/user_interface.py