VOL-1460 Updated core to use voltha-protos instead of local protos
Moved protos to python directory in order to maintain functionaly of containers built there.
Added capability to do local builds of protos
Added instructions on running dep ensure for getting protos.
Updated github.com/golang/protobuf version to v1.3.1

Change-Id: Ia6ef55f07f0d5dcb5b750d7c37b21b71db85bfc4
diff --git a/vendor/golang.org/x/net/http2/frame.go b/vendor/golang.org/x/net/http2/frame.go
index b46791d..514c126 100644
--- a/vendor/golang.org/x/net/http2/frame.go
+++ b/vendor/golang.org/x/net/http2/frame.go
@@ -643,7 +643,7 @@
 	return f.WriteDataPadded(streamID, endStream, data, nil)
 }
 
-// WriteData writes a DATA frame with optional padding.
+// WriteDataPadded writes a DATA frame with optional padding.
 //
 // If pad is nil, the padding bit is not sent.
 // The length of pad must not exceed 255 bytes.