Disable provenance in gitlab

[khewonc]

What does this PR do?

Previous:

$ docker manifest inspect xxx
{
   "schemaVersion": 2,
   "mediaType": "application/vnd.oci.image.index.v1+json",
   "manifests": [
      {
         "mediaType": "application/vnd.oci.image.manifest.v1+json",
         "size": 1810,
         "digest": "sha256:xxx",
         "platform": {
            "architecture": "arm64",
            "os": "linux"
         }
      },
      {
         "mediaType": "application/vnd.oci.image.manifest.v1+json",
         "size": 566,
         "digest": "sha256:xxx",
         "platform": {
            "architecture": "unknown",
            "os": "unknown"
         }
      }
   ]
}

Now:

$ docker manifest inspect xxx
{
	"schemaVersion": 2,
	"mediaType": "application/vnd.docker.distribution.manifest.v2+json",
	"config": {
		"mediaType": "application/vnd.docker.container.image.v1+json",
		"digest": "sha256:xxx",
		"size": 8927
	},
	"layers": [
		{
			"mediaType": "application/vnd.docker.image.rootfs.diff.tar.gzip",
			"digest": "sha256:xxx",
			"size": 35983791
		},
		[...]
	]
}

Motivation

Release issues with unknown platform:

      "platform": {
        "architecture": "unknown",
        "os": "unknown"
      }

Additional Notes

Anything else we should know when reviewing?

Minimum Agent Versions

Are there minimum versions of the Datadog Agent and/or Cluster Agent required?

• Agent: vX.Y.Z
• Cluster Agent: vX.Y.Z

Describe your test plan

Write there any instructions and details you may have to test your PR.

Checklist

• PR has at least one valid label: bug, enhancement, refactoring, documentation, tooling, and/or dependencies
• PR has a milestone or the qa/skip-qa label