grpc-netty is still really useful, but for most users who aren't doing
anything advanced using grpc-netty-shaded is much safer from a
dependency basis.
grpc-netty-shaded has seen more usage and has shown itself to be stable
and reduce the number of conflicts due to Netty versions.
This PR adds an automatic gradle format checker and reformats all the *.gradle files. After this, new changes to *.gradle files will fail to build if not in good format, just like checkStyle failure.