Support multiple public ips for firewall

[lonegunmanb]

Describe your changes

Issue number

56

Checklist before requesting a review

• [ ] The pr title can be used to describe what this pr did in CHANGELOG.md file
• [ ] I have executed pre-commit on my machine
• [ ] I have passed pr-check on my machine

Thanks for your cooperation!

[matt-FFFFFF]

@lonegunmanb

I think we should consider adding g a new map to the firewall block to account for multiple IP addresses.

We keep the default_ip_configuration block but deprecate it. Recommending that users use the new ip_configurations map.

Behind the scenes we move the public ip resource into a for_each loop. If customer uses only default_ip_configuration we can create a map with a single entry.

This way we ensure the module can create all the required resources and do not make any breaking changes.

We can use the moved block inside the module to cope with the change

This way we provide a consistent way to implement public IPs.