[automerger skipped] Merge "Add function to export default values for RBE...

[automerger skipped] Merge "Add function to export default values for RBE related variables" into rvc-dev am: 9bd7223a am: c8111ccc am: 8f477faf -s ours

am skip reason: Change-Id I429835f1bb6da75e2fcee7e9ddac6b11672121cd with SHA-1 4d158b5f is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/+/12445425

Change-Id: I9f411e147b3fe3dfaa6b457deaa378f8a5216343