Remove -ti in docker and kubectl calls

[collivier]

Description

It avoids passing stdin to the container when useless. Please note it removes a couple of issues highlighted by [1] in airgap specs.

It also removes all useless blank chars in the files modified by this change.

[1] https://github.com/cnti-testcatalog/testsuite/pull/1949

How has this been tested:

• [X] Covered by existing integration testing
• [ ] Added integration testing to cover
• [ ] Verified all A/C passes
  • [ ] develop
  • [ ] master
  • [ ] tag/other branch
• [X] Test environment
  • [ ] Shared Packet K8s cluster
  • [ ] New Packet K8s cluster
  • [X] Kind cluster
• [ ] Have not tested

Types of changes:

• [X] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Documentation update

[collivier]

@HashNuke would you mind running the specs in your branch. I ran a few specs locally but this change requires a full verification. Thank you in advance.

[HashNuke]

Build passing - https://github.com/cnti-testcatalog/testsuite/actions/runs/8769450532

[HashNuke]

Resolved conflict by commenting out airgap specs as in main branch.