导入gitee issue，用户名太长

lib/tasks/batch_add_issues.rake

@@ -46,11 +46,12 @@ namespace :batch_add_issues do
         issue_status = ["", "open", "progressing", "", "", "closed", "rejected"].index(issue['state'])
         issue_status = 1 if issue_status.nil?
         user_login = issue['user']['login']
+        user_login = user_login[0..20] if user_login.size > 29
         issue_created_at = issue['created_at']
         issue_updated_at = issue['updated_at']
         user = User.find_by(login: user_login)
         unless user.present?
-          username = user_login[0..28]
+          username = user_login
           email = "#{username}@gitlink.org.cn"
           phone = ""
           password = "a12345678"