LTS branches have Evergreen projects defined by evergreen_nightly.yml. That means, suites we add to evergreen.yml won't run on LTS branches, unless we also copy them into the nightly YAML file. However, we have a set of definitions in etc/evergreen_yml_components/variants/ which get included into other files. Specifically, the sanitizer.yml file gets imported into evergreen.yml and evergreen_nightly.yml.

We should move our fuzzer suite to sanitizer.yml. The fuzzers extensively use the sanitizers, and should run on all branches.