Automatically merge partial Docker events

Anyone that was worked with Docker logs knows how frustrating this problem can be. Docker, by default, splits log messages that exceed 16kb. While 16kb seems like a lot, it can easily be exceeded if you're logging rich structured events. This can be a very difficult and frustrating problem to solve with other tools (we speak from experience). In this release, Vector solves this automatically with a new auto_partial_merge option in the docker_logs source.

sources:
  my_source_id:
    type: "docker_logs"
    auto_partial_merge: true

We love assimilation and look forward to a future where our individualistic human personalities can also be merged into a societal hive mind.