[travis] enable module-based builds

mdevan · mdevan · commit 92ba2b10ce44 · 2019-02-13T12:53:51.000+05:30
diff --git a/.travis.yml b/.travis.yml
@@ -2,3 +2,7 @@ language: go
 
 go:
   - "1.11"
+
+env:
+  - GO111MODULE=on
+

-Original file line number
+Diff line change
 go:
   - "1.11"
++
 +env:
 +  - GO111MODULE=on
++