update salt.utils.stringutils.human_to_bytes for broader use

[nicholasmhughes]

What does this PR do?

This PR moves the _handle_unit function from the virt module to the stringutils.human_to_bytes utility in order to replace the narrow functionality there. It also tags the function as a Jinja filter.

What issues does this PR fix or reference?

Fixes: #61831

Previous Behavior

human_to_bytes didn't handle sizes above a petabyte, and also didn't handle units specified in more than a character (KB or KiB vs K).

New Behavior

The function is now much more flexible and is exposed as a Jinja filter.

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

Commits signed with GPG?

Yes

Please review Salt's Contributing Guide for best practices.

See GitHub's page on GPG signing for more information about signing commits with GPG.

[github-actions]

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Detected Issues (click me)

Check Known Missing Docstrings...........................................Failed
- hook id: invoke
- duration: 1.14s
- exit code: 1
The function 'nesthash' on 'salt/modules/virt.py' does not have a 'CLI Example:' in it's docstring

The function 'init' on 'salt/modules/virt.py' does not have a 'CLI Example:' in it's docstring

The function 'node_devices' on 'salt/modules/virt.py' does not have a 'CLI Example:' in it's docstring

The function 'network_update' on 'salt/modules/virt.py' does not have a 'CLI Example:' in it's docstring

The function 'pool_update' on 'salt/modules/virt.py' does not have a 'CLI Example:' in it's docstring

The function 'random' on 'salt/utils/stringutils.py' does not have a docstring

Found 6 errors

---

Thanks again!

[nicholasmhughes]

re-run pr-ubuntu-2004-amd64-py3-tcp-pytest

[nicholasmhughes]

re-run pr-arch-lts-x86_64-py3-pytest

[nicholasmhughes]

re-run pr-arch-lts-x86_64-py3-pytest

[waynew]

I suppose Yottabytes is probably a reasonable place to stop for now