This is a preparation for CI builders to do reclient migration. Adding reclient properties doesn't switch to reclient, yet. Bug: b/239908030 Change-Id: I43b1147729992f2dca9e24c9080953ef121db17f Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/274200 Auto-Submit: Junji Watanabe <jwata@google.com> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/main@{#38015}