feat: promote drift to stable

[rschalo]

Fixes #N/A

Description
Removes the feature gating of Drift. Will need to update values.yaml in cloudprovider specific karpenter.

How was this change tested?
Deployed to local karpenter and unit testing.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[k8s-ci-robot]

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[jonathan-innis]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jonathan-innis, rschalo

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