Make sure that all system queries get run in sudo mode

[onkar]

Environment

Snuba admin has support to run in sudo mode. Make sure all system queries get run in sudo mode. Consider providing a way to skip validation in case of emergencies.

Steps to Reproduce

Verification needs to be done to make system queries get run only in sudo mode.

Expected Result

Non-sudo mode is not supported on system queries unless override is provided for emergency situations.

Actual Result

System queries are run in non-sudo mode.