VOL-5088
v2.12 - update voltha.protos version in all go.mod configs

Change-Id: I6228ad6f1fd521fd3d54218e8dd137a2e6d5016e
diff --git a/vendor/go.opentelemetry.io/otel/go.mod b/vendor/go.opentelemetry.io/otel/go.mod
new file mode 100644
index 0000000..95f9aa4
--- /dev/null
+++ b/vendor/go.opentelemetry.io/otel/go.mod
@@ -0,0 +1,8 @@
+module go.opentelemetry.io/otel
+
+go 1.14
+
+require (
+	github.com/google/go-cmp v0.5.2
+	github.com/stretchr/testify v1.6.1
+)