Committing vendored dependencies and generated protos

Change-Id: I349c149b513d9de7d9f60bde2c954a939da2fc54
diff --git a/vendor/github.com/grpc-ecosystem/grpc-gateway/codegenerator/doc.go b/vendor/github.com/grpc-ecosystem/grpc-gateway/codegenerator/doc.go
new file mode 100644
index 0000000..3645317
--- /dev/null
+++ b/vendor/github.com/grpc-ecosystem/grpc-gateway/codegenerator/doc.go
@@ -0,0 +1,4 @@
+/*
+Package codegenerator contains reusable functions used by the code generators.
+*/
+package codegenerator