Add tls option in smtp settings for ActionMailer

Summary

There is no tls option support in smtp settings for ActionMailer template, so ActionMailer doesn't work with Yandex. Patching smtp_settings.rb with tls: true option leads to success

Steps to reproduce

Use Yandex as smtp service

Configuration used

According to https://docs.gitlab.com/omnibus/settings/smtp.html#yandex

global:
  smtp:
    enabled: true
    address: smtp.yandex.ru
    port: 465
    user_name: my-user-name
    domain: yandex.ru
    authentication: login
    starttls_auto: true
    openssl_verify_mode: peer
    password:
      secret: gitlab-smtp-password

Current behavior

ActionMailer template has no tls option

Expected behavior

--set global.smtp.tls=true

Versions

• Chart: 1.4.4
• Platform:
  • Self-hosted: Kubespray
• Kubernetes:
  • Client: v1.13.1
  • Server: v1.12.3
• Helm:
  • Client: v2.9.1
  • Server: v2.11.0