Return dict not protobuf message for ffs.default_config()

[peterVG]

Right now the user of the grpc-client has to import and use MessageToDict() from google.protobuf.json_format to convert the protobuf message to a Python dictionary. This should be abstracted away and done in the client which should just return a dictionary to the script calling ffs.default_config().

Note, this has already been done for the ffs.set_default_config() method. See

pygate-gRPC/pygate_grpc/ffs.py

Line 84 in 84554d5

config = Parse(config, ffs_rpc_pb2.StorageConfig())