Currently, buildscripts sometimes refer to tools using the traditional /opt/mongodbtoolchain system-installed toolchain. However, as we switch to bazel it may be advantageous to have some or all of the buildscripts refer to tools using the toolchain bazel downloads and caches. For example, if we were to have all buildscripts use the bazel toolchain and completely get off the system-installed one, there wouldn't be any need for engineers to reinstall the toolchain when we upgrade it.