feat: add configuration management and update deployment files

hello/hello.go

@@ -1,11 +1,19 @@
 package hello
 
 import (
+	"encoding/base64"
+	"fmt"
 	"k8s-example/cmn/utils"
 	"net/http"
+
+	"github.com/spf13/viper"
 )
 
 func Handler(w http.ResponseWriter, _ *http.Request) {
 	utils.Fnc()
 	_, _ = w.Write([]byte("Hello, World!"))
+
+	encodedTestKey := base64.StdEncoding.EncodeToString([]byte(viper.GetString("test.key")))
+
+	fmt.Println(encodedTestKey)
 }