Configure mail TLS or SSL connection when seeding

This allows to seed the secure connection type of the default mail
method.

config/application.yml.example

@@ -30,6 +30,7 @@ SMTP_USERNAME: 'ofn'
 SMTP_PASSWORD: 'f00d'
 
 # Optional mail settings
+# MAIL_SECURE_CONNECTION: 'TLS' # 'None' (default), 'SSL' or 'TLS'
 # MAILS_FROM: hello@example.com
 # MAIL_BCC: manager@example.com
 

db/seeds.rb

@@ -42,7 +42,7 @@ def create_mail_method
     preferred_mail_auth_type: 'login',
     preferred_smtp_username: ENV.fetch('SMTP_USERNAME'),
     preferred_smtp_password: ENV.fetch('SMTP_PASSWORD'),
-    preferred_secure_connection_type: 'None',
+    preferred_secure_connection_type: ENV.fetch('MAIL_SECURE_CONNECTION', 'None'),
     preferred_mails_from: ENV.fetch('MAILS_FROM', "no-reply@#{ENV.fetch('MAIL_DOMAIN')}"),
     preferred_mail_bcc: ENV.fetch('MAIL_BCC', ''),
     preferred_intercept_email: ''