Add firewall basic configuration

Related with:

• https://gitlab.com/coopdevs/odoo-provisioning/-/merge_requests/134
• https://gitlab.com/coopdevs/odoo-provisioning/-/merge_requests/148

The version v0.6.0 install and configure the firewall with a basic configuration in TCP ports.

In version v0.6.6 we change this logic and the firewall becomes optional.

We must define explicit in the inventories the firewall configuration to be updated with the server state.