feat: add default reply to get on / and health check on /healthz

gecho.go

@@ -5,8 +5,15 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"strings"
 )
 
+func ok(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Test", "test")
+	fmt.Fprint(w, strings.Join(r.Header.Values("X-Request-Id"), ","))
+
+}
+
 // handler generates the echo server response
 func handler(l int) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {