api/server/httputils: compile with go < 1.7

Signed-off-by: Antonio Murdaca <runcom@redhat.com>

api/server/httputils/httputils_write_json.go

@@ -0,0 +1,17 @@
+// +build go1.7
+
+package httputils
+
+import (
+	"encoding/json"
+	"net/http"
+)
+
+// WriteJSON writes the value v to the http response stream as json with standard json encoding.
+func WriteJSON(w http.ResponseWriter, code int, v interface{}) error {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(code)
+	enc := json.NewEncoder(w)
+	enc.SetEscapeHTML(false)
+	return enc.Encode(v)
+}