[automerger skipped] Merge "Add support for remote-execution / caching of...

[automerger skipped] Merge "Add support for remote-execution / caching of signapk actions" into rvc-dev am: 6619d28c -s ours am: f1cadc74 -s ours am: 87d58cfc -s ours am: 78149a40 -s ours

am skip reason: Change-Id I4b8c21320c2f38914ef39d3d8f036d885fab4e72 with SHA-1 15e9d0db is in history

Change-Id: I1ffc64b20c779ccfeb0e997a418efbb7619cd3b0