Go: refactor UUID functions (#16695)

As title

---------

Signed-off-by: Jin Hai <haijin.chn@gmail.com>

internal/admin/handler.go

@@ -1158,7 +1158,7 @@ func (h *Handler) ShutdownIngestor(c *gin.Context) {
 		return
 	}
 
-	taskID := common.GenerateUUID()
+	taskID := utility.GenerateUUID()
 	//ingestionManager.SubmitTask(&common.TaskAssignment{
 	//	TaskId:     taskID,
 	//	TaskType:   "SHUTDOWN",

internal/admin/service.go

@@ -972,7 +972,7 @@ func (s *Service) GenerateUserAPIToken(username string) (map[string]interface{},
 
 	// 3. Generate API token
 	key := utility.GenerateAPIToken()
-	beta := utility.GenerateBetaAPIToken(key)
+	beta := utility.GenerateBetaAPIToken()
 
 	apiToken := &entity.APIToken{
 		TenantID: tenantID,