Component template for `process.*` field set cannot be used as is.

Description of the problem including expected versus actual behavior: The changes in v8.2.0 makes the generated component template for the process.* field set too large to be uploaded to elasticsearch without additional modifications.

Steps to reproduce:

1. Using v8.2.0 of the ECS repo, navigate to ./generated/elasticsearch/composable/component/.
2. curl https://elasticsearch:9200/_component_template/ecs_8.2.0_process -X PUT -u $AUTH -H "Content-Type: application/json" -d @process.json
3. Elasticsearch responds with an error. The template cannot be created because it contains more than 1000 fields.

Any additional context:

Adding a section for index settings to the template in order to increase the field limit allows it to be created.

The v8.2.0 changes also makes the provided example template contain too many fields. The field limit 2000 is too low.

[wallrik]

I can re-open this issue if needed, but I feel like maybe it’s outside the scope of my initial report.

Anyway, steps to reproduce: (Follow the steps under Setup and Install and Usage from ecs/USAGE.md)

$ git clone https://github.com/elastic/ecs.git
$ python -m venv virtual-env
$ . virtual-env/bin/activate

$ cd ecs
$ git checkout v8.3.1
$ python -m pip install -r scripts/requirements.txt
$ cat generated/elasticsearch/composable/component/process.json | grep "type" | wc -l
324
$ python scripts/generator.py
Loading schemas from local files
Running generator. ECS version 8.3.1
$ cat generated/elasticsearch/composable/component/process.json | grep "type" | wc -l
1760

[djptek]

Maybe it is just a matter of clarifying the readme file

Sounds like a plan

@javanna which fieldset are you generating?