:robot: Add -race to tests

.github/tests.sh

@@ -5,7 +5,7 @@ set -ex
 GO111MODULE=off go get github.com/onsi/ginkgo/ginkgo
 GO111MODULE=off go get github.com/onsi/gomega/...
 
-go test ./pkg/...
+go test -race ./pkg/...
 
 ./edgevpn api &