Imports of package rpcflags

PathSynopsis
flagPackage flag implements command-line flag parsing.
github.com/golang/glogPackage glog implements logging analogous to the Google-internal C++ INFO/ERROR/V setup.
google.golang.org/grpcPackage grpc implements an RPC system called gRPC.
google.golang.org/grpc/credentialsPackage credentials implements various credentials supported by gRPC library, which encapsulate all the state needed by a client to authenticate with a server and make various assertions, e.g., about the client's identity, role, or whether it is authorized to make a particular call.