I'm working on Stackdriver monitoring in another branch, which required updating `google.golang.org/genproto`, which required updating `google.golang.org/grpc`, which required updating `github.com/golang/protobuf`, and so on. This PR updates all of the Google-provided deps to their latest versions. In addition, there is:
- A change in config.go to reflect an updated type name
- Five files changed by `make fmt`
Tested with `make build`, `make test`, and `make testacc`.
Add support for Google Dataflow jobs
Note: A dataflow job exists when it is in a nonterminal state, and does not exist if it
is in a terminal state (or a non-running state which can only transition into terminal
states). See doc for more detail.
