appveyor: build fix for go tests

appveyor.yml

@@ -29,10 +29,10 @@ install:
 
 build_script:
   - go run build.go build
-  - go test -v ./pkg/...
   - grunt release
   - go run build.go sha-dist
   - cp dist/* .
+  - go test -v ./pkg/...
 
 artifacts:
   - path: grafana-*windows-*.*