[automerger skipped] [DO NOT MERGE] Add USE_RBE support to soong. am:...

[automerger skipped] [DO NOT MERGE] Add USE_RBE support to soong. am: adf591a5 am: 2445d7c4 -s ours am: 87ef57fb -s ours am: eab830e2 -s ours

am skip reason: Change-Id I5bf008a940513872d70b5b215bd6209f759826ae with SHA-1 bbf2567c is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/soong/+/12467704

Change-Id: Id2bf11460598d7c229d5fd00e0cfa5b24efc2daf