Lightbuild: Making Android build configs agent-friendly

Google just put out something worth paying attention to: 𝗟𝗶𝗴𝗵𝘁𝗯𝘂𝗶𝗹𝗱.If you've done any 𝗔𝗻𝗱𝗿𝗼𝗶𝗱 𝗱𝗲𝘃, you already know the build files are where the pain lives. 𝗚𝗿𝗮𝗱𝗹𝗲 config