Update Golang version to run on Travis

Author: moul

.travis.yml

@@ -19,7 +19,11 @@ matrix:
       env:  TEST_WITH_REAL_API=0 GOTESTFLAGS="-race -cpu=1,2,4"
     - go:   1.8
       env:  TEST_WITH_REAL_API=0 GOTESTFLAGS="-race -cpu=1,2,4"
-    - go:   1.8
+    - go:   1.9
+      env:  TEST_WITH_REAL_API=0 GOTESTFLAGS="-race -cpu=1,2,4"
+    - go:   "1.10"
+      env:  TEST_WITH_REAL_API=0 GOTESTFLAGS="-race -cpu=1,2,4"
+    - go:   "1.10"
       env:  TEST_WITH_REAL_API=1
     - go:   tip
       env:  TEST_WITH_REAL_API=0 GOTESTFLAGS="-race -cpu=1,2,4"