Add EEF EPMD Exposure Blog Reference

[maennchen]

Add blog entry with link to https://erlef.org/blog/eef/epmd-public-exposure

[pivotal-cla]

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[michaelklishin]

@maennchen thank you. I cannot promise that we will publish the blog post but we certainly can adjust our documentation to communicate the idea and link to the EEF blog post.

[maennchen]

@michaelklishin I thought it would be a good idea to publish something in the RabbitMQ ecosystem since not every RabbitMQ user is also well-versed with Erlang and it would be good to reach this audience as well. Especially since the nr. of affected RabbitMQ users is particularly high.

If it's in the shape of this exact post does not matter.

In any case: If the EEF security WG / myself can be of help, let me know :)