VOL-1917 move to go mod

Change-Id: Ia8de8bd8a4f4d908cc1fa745f6f4ec949629017b
diff --git a/vendor/sigs.k8s.io/yaml/.travis.yml b/vendor/sigs.k8s.io/yaml/.travis.yml
new file mode 100644
index 0000000..03ddc73
--- /dev/null
+++ b/vendor/sigs.k8s.io/yaml/.travis.yml
@@ -0,0 +1,14 @@
+language: go
+dist: xenial
+go:
+  - 1.9.x
+  - 1.10.x
+  - 1.11.x
+script:
+  - go get -t -v ./...
+  - diff -u <(echo -n) <(gofmt -d .)
+  - diff -u <(echo -n) <(golint $(go list -e ./...) | grep -v YAMLToJSON)
+  - go tool vet .
+  - go test -v -race ./...
+install:
+  - go get golang.org/x/lint/golint