This a follow up from PLANET-6454 and the fact that the GDPR Comments plugin in not maintained anymore. This ticket is about implementing one of its functions: anonymizing IP addresses.

Requirements:

• Just store an empty IP address instead of the real one.
• No need to make that option configurable. Not storing IPs is a good practice anyway.

Migration Requirements

• All plugin options are grouped under a gdpr_comments dict. To avoid having both anonymizers running we can add a post-deploy script and use wp option patch to remove the plugin option. If this is released along with PLANET-6465, we can just remove the plugin.

Documentation Requirements

• Coordinate with Community team to update the relevant Handbook page.

Reference

• Here is the current plugin code. It just returns an empty string.
• Wordpress provides a hook for comment authors' IP address