As a QoS user, I want the collected metrics to match the latest specifications.

Acceptance criteria

• Split time_metrics into qoe_metrics and qos_metric.
• Send bitrate and bandwidth in bits per second.
• Add the streamType (on-demand, live) in QoSEvent.
• Update the player_position as follows in QoSEvent and QoSError:
  • duraton: the duration of the media being played.
  • position: the current position.
  • position_timestamp: the raw date available from the player (read from the playlist), corresponding to the current player position.
• Add an optional vpn flag if a VPN is used in QoSEvent.
• Add the schema version.
• Remove the token parameter from QoSMedia.assetUrl.