Better test coverage for all Z-Pages (tracez, traceconfigz).
Add support for changing trace params for a period of time (example for the next 5 minutes). Should allow only one temporary change at a time and change the page to display if there is a temporary change in progress, allow to revert that change.
Tracez page should allow to pick the error code when display the errors.
Cleanup code in Tracez page by resolving TODOs.
Cleanup code in TraceConfigz page by resolving TODOs.