feat(kong): allow setting Node ports

[pmalek]

Add possibility to specify NodePorts for kong's admin API and HTTP port.

This is required for Kong/kubernetes-ingress-controller#4823 to prevent tests colliding when deploying multiple kong addons to the same cluster.

[codecov-commenter]

Codecov Report

Attention: 13 lines in your changes are missing coverage. Please review.

Comparison is base (418f3f0) 59.43% compared to head (87b000a) 59.40%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #844      +/-   ##
==========================================
- Coverage   59.43%   59.40%   -0.04%     
==========================================
  Files          49       49              
  Lines        3996     4015      +19     
==========================================
+ Hits         2375     2385      +10     
- Misses       1317     1325       +8     
- Partials      304      305       +1     

Flag	Coverage Δ
integration-test	59.40% <53.57%> (-0.04%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
pkg/clusters/addons/kong/addon.go	60.08% <57.14%> (-0.23%)	⬇️
pkg/clusters/addons/metallb/metallb.go	69.06% <20.00%> (ø)
pkg/clusters/addons/kong/builder.go	81.39% <62.50%> (-2.96%)	⬇️

... and 3 files with indirect coverage changes

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