fix nftables.delete not working when no position arg provided

[mlalpho]

when position not provided, the data structure of position changes when sent out to cmd.run

What does this PR do?

What issues does this PR fix or reference?

Fixes:
Error when calling nftables.delete with full rule (no position)

 [ERROR   ] stdout: Error: syntax error, unexpected '{', expecting number
                  delete rule ip filter INPUT handle {result: True, handle: 45}

Merge requirements satisfied?

[NOTICE] Bug fixes or features added to Salt require tests.

• Docs
• Changelog - https://docs.saltproject.io/en/master/topics/development/changelog.html
• Tests written/updated

Thoughts? @garethgreenaway :)

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[dwoz]

Closing this due to inactivity. Anyone should feel free to re-open it if they want to see it through to the end in one release cycle.

[mlalpho]

@dwoz What else needs to be done? Tests? 🤔 Anyone else using nftables to confirm the bug? I've run into a few issues with nftables modules/states.

I'm not in a good position write tests, at the moment. I'd appreciate some help otherwise I'll be able to revisit some time later 🤷‍♂️

Thank you!

[dwoz]

@mlalpho We'd need it to be re-opened against master with tests and a changlog entry.