Update traefik.cue in addon

[pinghe]

Description of your changes

Add configurability to the ipFamilyPolicy and annotations properties of the service

How has this code been tested?

Checklist

I have:

• [ ] Title of the PR starts with type (e.g. [Addon] , [example] or [Doc]).
• [ ] Updated/Added any relevant documentation and examples.
• [ ] New addon should be put in experimental.
• [ ] Update addon should modify the version in metadata.yaml to generate a new version.

Verified Addon promotion rules

If this pr wants to promote an experimental addon to verified, you must check whether meet these conditions too:

• [ ] This addon must be tested by addon's e2e-test to guarantee this addon can be enabled successfully.
• This addon must have some basic but necessary information.
  • [ ] An accessible icon url and source url defined in addon's metadata.yaml.
  • [ ] A detail introduction include a basic example about how to use and what's the benefit of this addon in README.md.
  • [ ] Also provide an introduction in KubeVela documentation.
  • [ ] It's more likely to be accepted if useful examples provided in example dir.