Today we're proliferating a combinatorial explosion of suite configs as we add new suites like embedded_router_*_passthrough to run all existing suites in embedded router mode.

We should consider keeping a few high-value such suites that can run in the dev/patch-build build variants.

But we can remove some and prevent the proliferation of others by simply creating a new nightly build-variant that runs the suites/passthroughs in embedded router mode. This will both save us money and prevent the combinatorial explosion of suites, since we can re-use existing suites and do the embedded-router configuration at the build-variant level.