Rootless mode also bind service nodePort to host for LoadBalancer type

[hinshun]

Proposed Changes

When creating a service, typically the service port is for pod-to-pod access whereas nodePort is used for external access. In non-rootless mode, I was able to access a service of type LoadBalancer via localhost on both its service port and nodePort.

However, in rootless mode, I was only able to access it via localhost on its service port but not its nodePort.

Types of Changes

Rootless mode should also bind service nodePort to host for LoadBalancer type, matching UX of rootful mode.

Verification

1. kubectl apply a simple pod & LoadBalancer service with nodePort
2. Pod is accessible via service port and nodePort

Linked Issues

• Bind LoadBalancer nodePort for rootless k3s #9511

User-Facing Change

Rootless mode should also bind service nodePort to host for LoadBalancer type, matching UX of rootful mode.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 6 lines in your changes are missing coverage. Please review.

Project coverage is 42.91%. Comparing base (085ccbb) to head (1c40872).
Report is 13 commits behind head on master.

Files	Patch %	Lines
pkg/rootlessports/controller.go	0.00%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #9512      +/-   ##
==========================================
- Coverage   49.12%   42.91%   -6.21%     
==========================================
  Files         151      154       +3     
  Lines       13475    13529      +54     
==========================================
- Hits         6619     5806     -813     
- Misses       5515     6554    +1039     
+ Partials     1341     1169     -172     

Flag	Coverage Δ
e2etests	?
inttests	39.48% <0.00%> (-0.01%)	⬇️
unittests	15.95% <ø> (?)

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