Update dependencies (#1634)

bazel_gazelle to master as of 2018-08-06
com_google_protobuf to v3.6.1
com_github_goog_protobuf to v1.1.1
org_golang_x_net to master as of 2018-08-06
org_golang_google_grpc to v1.14.0
org_golang_google_genproto to master as of 2018-08-06
go_googleapis to master as of 2018-08-06
com_github_kevinburke_go_bindata to v3.11.0
org_golang_x_tools to master as of 2018-08-07
118 files changed