Customize emails for guest password

Log in to the Abiquo API Server as an administrator
In the config folder, if there is no mail folder, create a mail folder and set the owner as the tomcat user
```
/opt/abiquo/config/mail
```
In the mail folder, create the following files

Email file

guestPasswordTemplate_en_US.mustache

<p>Hi {{username}},</p>
<p>Your new virtual machine is up and running. You can access it using the following credentials:</p>
<p>
Virtual machine UUID: {{vmuuid}}<br/>
Virtual machine name: {{vmname}}<br/>
Virtual machine providerID: {{vmproviderid}}<br/>
FQDN: {{fqdn}}<br/>
Username: {{loginuser}}<br/>
Password: {{loginpassword}}
</p>
<p>The Abiquo Team</p>

Properties file
guestPassword_en_US.properties
```
subject=New Virtual machine {0}
```
If you change the subject property, you must restart the Tomcat server to apply your changes
The only variable that you can set in the default message is the subject
If the Fully qualified domain name is not set in the VM, the value of the FQDN variable will be "undefined".

Optionally add custom variables and content
- In the email body, to add a custom variable, use double curly braces (also called double mustaches). For example
```
<p>Please call your system Administrator on <strong>{{helpline}}</strong></p>
```
- Then in your properties file, set value for your custom variable
```
helpline=555 12345
```
  To return unescaped HTML as part of a template property, use the triple mustache, which is "{{{" and "}}}". The Mustache templating software that adds the property values will escape HTML variables in double mustaches by default.

If your users have a language other than English, rename the file to change the language code to the user language
- For example, for "Spanish - Spain" change the en_US to es_ES
- The user language is the UI language when you create the user
Change the owner of the files to the tomcat user