Allow multi NAD in attractor

[LionelJouin]

Description

Multi NAD allows multiple network interfaces to be added to the attractor pods. The feature is already developed, only some conditions prevented its usage. The interface name that will be injected in the frontend via the environment variable will be the one specified in the attractor specs

Example with multiple NADs: https://gist.github.com/LionelJouin/3cf494db1db592fb01b16ff16b6493c8

Issue link

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Checklist

• Purpose
  • [ ] Bug fix
  • [x] New functionality
  • [ ] Documentation
  • [ ] Refactoring
  • [ ] CI
• Test
  • [ ] Unit test
  • [ ] E2E Test
  • [x] Tested manually
• Introduce a breaking change
  • [ ] Yes (description required)
  • [x] No