Fix config file path

.travis.yml

@@ -10,4 +10,4 @@ script:
 - go test -v ./...
 before_install:
 - openssl aes-256-cbc -K $encrypted_9e40808ea1e2_key -iv $encrypted_9e40808ea1e2_iv
-  -in controller_test.config.enc -out controller_test.config -d
+  -in psiphon/controller_test.config.enc -out psiphon/controller_test.config -d