More features and fixes

• Add IP address to status switch of its interface #71
• Constants clean up
• Add ability to set the interval to update data and entities separately, to update use the edgeos.update_configuration service and set the number of seconds per update_api_interval and/or update_entities_interval parameters, defaults are API: 30 seconds, Entities: 1 second
• Improved logic of service edgeos.update_configuration
• Add to store debug data HA data that is being used to generate HA components
• Add openvpn as supported interface type