VOL-1691 Fix openolt adapter getting stuck while registartion with core

Change-Id: Ide8131f325bc15f1b909e14d7af6ee9bcd6b3b5b
diff --git a/vendor/github.com/DataDog/zstd/.travis.yml b/vendor/github.com/DataDog/zstd/.travis.yml
index c5aa33d..629470c 100644
--- a/vendor/github.com/DataDog/zstd/.travis.yml
+++ b/vendor/github.com/DataDog/zstd/.travis.yml
@@ -1,9 +1,10 @@
+dist: xenial
 language: go
 
 go:
-  - 1.9.x
   - 1.10.x
   - 1.11.x
+  - 1.12.x
 
 os:
   - linux