🏃 Disable golangs parallel testing

According to onsi/ginkgo#280 this doesn't seem
to be properly supported. If we want parallelization, we should use
ginkgos built-in mechanism for that.

Author: alvaroaleman

hack/test-all.sh

@@ -22,7 +22,7 @@ setup_envs
 
 header_text "running go test"
 
-go test -race ${MOD_OPT} ./... -parallel 4
+go test -race ${MOD_OPT} ./...
 
 header_text "running coverage"