Add datadog_csi_driver to AGENT_CORECHECKS

[adel121]

What does this PR do?

Add datadog_csi_driver to AGENT_CORECHECKS so that it is shipped in /etc/datadog-agent/conf.d/datadog_csi_driver.d

It also adds auto_conf.yml which was previously missing.

Motivation

These issues were masked previously because the python check had been shipping the auto_config.yml.

But now we are dropping the python integration completely in order to:

• avoid redundancy
• reduce agent size

Describe how you validated your changes

Built custom image of the agent and verified the files are shipped correctly and the csi driver check runs successfully by default.

Additional Notes

Also tried to set an unsupported flag in the check config, and it worked without issues:

ad_identifiers:
  - csi-driver
init_config:
instances:
  - openmetrics_endpoint: http://%%host%%:5000/metrics
    request_size: 20

Running Checks
  ==============

    datadog_csi_driver
    ------------------
      Instance ID: datadog_csi_driver [OK]
      Configuration Source: file:/etc/datadog-agent/conf.d/datadog_csi_driver.d/auto_conf.yaml[0]
      Total Runs: 1
      Metric Samples: Last Run: 0, Total: 0
      Events: Last Run: 0, Total: 0
      Service Checks: Last Run: 1, Total: 1
      Average Execution Time : 1ms
      Last Execution Date : 2026-05-21 15:09:24.18 UTC (1779376164180)
      Last Successful Execution Date : 2026-05-21 15:09:24 UTC (1779376164000)

To validate that this works without the python side, I built the custom agent image against 7.65.1 which didn't include the python check, and validated the check config is loaded and running successfully.

[adel121]

Note to reviewers:

I am not sure if this should have been updated as well, but it looked inline with tasks/core_checks.py