API Review(5/9): Add Tracing controls to Sidecar API

Dear TOC,

Per the discussion in today’s meeting, I’ve scheduled a meeting for an API Review session for adding tracing controls to the Sidecar API. The document can be found here:
https://docs.google.com/document/d/1s7ScttcAfKL7g4ch5goWQYymUEghtTFiMvGPcdbTnpk/edit

Please plan to attend and read ahead.