Request to merge 

Fixed exception from etcHosts script file.

Fixed running vpn client playbook errors from roles easy-rsa-CA-client and OpenVPN-Client.

- The playbook can run in any user account (was error if it was not running on user account ec2-user)
- Fixed client.conf.
- Using etcHosts to flexibly define VM host name in inventory file.

Please merge it.

jupiter