Support internal load balancer setup on Azure

[3u13r]

Context

Proposed change(s)

• Allow to create a Constellation with internal LB instead of public LB.
• The actual implementation was done in https://github.com/edgelesssys/constellation/pull/2388

Additional info

• AB#2767
• E2E azure, nop, internal-lb: https://github.com/edgelesssys/constellation/actions/runs/6891907233

Checklist

• [x] Add labels (e.g., for changelog category)
• [x] Is PR title adequate for changelog?
• [x] Link to Milestone

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[3u13r]

Ah the strict node-to-node routing in combination with Azure internal LB's not doing SNAT breaks this feature for now. I can fix this in our Cilium fork though. We'll need another exception port (as we already do for both etcd ports). Converting to draft until then.

[github-actions[bot]]

Coverage report

Package	Old	New	Trend
internal/config	79.20%	79.20%	:left_right_arrow: