Allow enabling LSAN for builds

Nicolas Fellarequested to merge
nicolasfella/ci-utilities:work/nico/lsan-2 into master

Currently LSAN is explicitly deactivated via ASAN_OPTIONS.

That is a reasonable default since many projects have preexisting leaks.

However for project that are currently leak-free we want to enforce keeping it that way.

Add an option that allows projects to opt into LSAN

Merge request reports