Should ignore protos from 'google/rpc/context/*.proto' #575
Description
Nodejs-service-control fails on generated new PR due to npm run compile-protos fails on error:
(node:20193) UnhandledPromiseRejectionWarning: Error: ENOENT: no such file or directory, open 'protos/google/rpc/context/attribute_context.proto'
The root cause is that the generated src/v2/service_controller_proto_list.json contains
"../../protos/google/rpc/context/attribute_context.proto"