[exporter/datasetexporter]: Add configuration options server_host and retry_shutdown_timeout

[martin-majlis-s1]

Description: Introduce server_host configuration to allow specifying server host and retry_shutdown_timeout to specify time for the shutdown function

There is new configuration option server_host that allows specifying how to fill the field ServerHost of the Event structure.

New configuration for server_host looks like this:

    server_host:
      # If these attributes are not specified or empty,
      # use the value from the env variable SERVER_HOST
      use_host: ${env:SERVER_HOST}
      # If it's not set, use the hostname value
      use_hostname: true

This configuration is applied for logs and traces.

Since it's touching the same code, I have already merged changes from this PR - #23881 - into this branch, hoping that it will be merged soon. It's still not merged, so it's blocked by this.

New configuration for retry_shutdown_timeout looks like this:

    buffer:
      # Send buffer to the API at least every 5s
      max_lifetime: 5s
      # Group data based on these attributes
      group_by:
        - attributes.container_id
        - container_id
      # try to send data to the DataSet for at most 30s during shutdown
      retry_shutdown_timeout: 30s

This configuration specifies how much time the shutdown function has to send all the data that it has already accepted.

Link to tracking Issue: #24252

Testing:

I have added several unit tests to make sure that it works as expected.

Documentation: There is new section in the README describing the newly added configuration options.

[martin-majlis-s1]

This is the failing job - https://github.com/open-telemetry/opentelemetry-collector-contrib/actions/runs/5679983329/job/15393224752?pr=24415

When I run the command locally - make -j2 golint GROUP=other it succeeds.

[atoulme]

LGTM but please follow up on Curtis's feedback, as right now you have 2 changelog entries. You should have one.

[martin-majlis-s1]

LGTM but please follow up on Curtis's feedback, as right now you have 2 changelog entries. You should have one.

Since this PR is in progress for 3 weeks I have added here one more change. Therefore there are two entries. I know, that it's not ideal, but if the second change is trivial - pass another configuration option to the library, it's fine to bundle it here as well.

[zdaratom-s1]

LGTM