[VOL-1349] EPON OLT adapter (package B)

Change-Id: I634ef62c53813dcf4456f54948f13e06358e263c
diff --git a/vendor/github.com/cenkalti/backoff/v3/go.mod b/vendor/github.com/cenkalti/backoff/v3/go.mod
new file mode 100644
index 0000000..479e62a
--- /dev/null
+++ b/vendor/github.com/cenkalti/backoff/v3/go.mod
@@ -0,0 +1,3 @@
+module github.com/cenkalti/backoff/v3
+
+go 1.12