validators: T6739: fix ipaddrcheck argument quoting (backport #4099)

[mergify]

Change Summary

Properly quote ipaddrcheck arguments in validator scripts to ensure they are handled correctly if they contain whitespace. Right now such arguments are correctly rejected but result in confusing error messages that contain ipaddrcheck's help:

vyos@vyos# set interfaces ethernet eth1 address "a valid IP address, I swear!"

  Error: wrong number of arguments, one argument required!
  Usage: ipaddrcheck <OPTIONS> [STRING]
  Address checking options:
    --is-valid                 Check if STRING is a valid IPv4 or IPv6 address
                                 with or without prefix length
    --is-any-cidr              Check if STRING is a valid IPv4 or IPv6 address
                                 with prefix length

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, renaming)
• Refactoring (no functional changes)
• Migration from an old Vyatta component to vyos-1x, please link to related PR inside obsoleted component
• Other (please describe):

Component(s) name

Validators.

How to test

Smoketest result

Checklist:

• I have read the CONTRIBUTING document
• I have linked this PR to one or more Phabricator Task(s)
• I have run the components SMOKETESTS if applicable
• My commit headlines contain a valid Task id
• My change requires a change to the documentation
• I have updated the documentation accordingly

---

This is an automatic backport of pull request #4099 done by [Mergify](https://mergify.com).

[github-actions]

👍
No issues in PR Title / Commit Title

[c-po]

Regression in source commit

https://github.com/vyos/vyos-1x/actions/runs/11036683938/job/30656416756#step:5:1522