Fix for Issue #5227

[phires]

This resolves issue #5227.

CIDR notations are now checked using the respective go function instead of a regex.
This leads to old notations without the network suffix to be invalid and could possible break some deployments.
Additionally a validation func is added for these invalid notations (CIDRAllowNoSuffix).

Also, as more and more services now allow IPv4 and IPv6 a func has been added to validate both versions (IPAddress)

[katbyte]

Hey @phires, thank you for doing this.

We recently moved the non azure specific validators into the plugin SDK: hashicorp/terraform-plugin-sdk#296 & hashicorp/terraform-plugin-sdk#301

Is there anything here not already reflected by those PRs? - we have decided to remove the AndEmpty ones as we can no combine them with Any or All

[phires]

Moving the validators up to the SDK is a great idea, as all providers participate of those now.
So I guess this PR can be closed, as everything seems to be there.

[katbyte]

Closing as requested 👍

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

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