More than 20 pixel tasks have been running in the staging pool

, and some of them have been passing consistently and are being promoted to prod:
https://github.com/flutter/flutter/pulls?q=is%3Aopen+is%3Apr+author%3Afluttergithubbot+pixel

However, we do not seem to have any testbeds available in the prod pool.
/cc @yusuf-goog @zanderso What is our plan for these targets and the corresponding testbeds?