Add Karpenter Test to the integration tests executing on Dev, Test and Ops venues

[LucaCinquini]

Purpose

• This PR adds an integration test that executes the "karpenter_test" DAG on all venues. A successful execution will guarantee that the basic functionality of executing a DAG on that venue using the Keda and Karpenter plugins is working.

Proposed Changes

• [ADD] Karpenter Test to the SPS integration tests

Issues

• [New Feature]: Add generic DAG integration test to all venues

Testing

• Manually triggered the integration tests, executed successfully on all venues, including the new Karpenter Test

[LucaCinquini]

This PR was a precursor of this one: #448
and was never merged.