Explicitly run go fmt on csi/node_test.go

go 1.11's "go fmt" has a backwards incompatible formatting
change due to golang/go#26228
which only affects the csi/csi_test.go file.

This is a temporary workaround for difference in go fmt between
1.9/1.10 and 1.11+, to fix travis.  We can remove this when we drop
go 1.9 and go 1.10 from travis.

Signed-off-by: Craig Rodrigues <craig@portworx.com>

.travis.yml

@@ -13,6 +13,9 @@ install:
   - go get -u github.com/go-swagger/go-swagger/cmd/swagger
 script:
   - git-validation -run DCO,short-subject
+# Temporary hack to work around 'go fmt' difference between go 1.9/1.10 and 1.11+, only affects node_test.go
+  - go fmt csi/node_test.go
+  - go fmt csi/v0.3/node_test.go
   - go fmt $(go list ./... | grep -v vendor) | wc -l | grep 0
   - make docker-proto
   - git diff $(find . -name "*.pb.*go" -o -name "api.swagger.json" | grep -v vendor) | wc -l | grep "^0"