STORM-3879 Add Kafka README file to distribution

[MNkulkarni06]

What is the purpose of the change

This change ensures that the README files for the Kafka modules are included in the Storm distribution tar.
Previously, the following files were present in the repository but were not guaranteed to be included in the release package:

external/storm-kafka-migration/README.md
external/storm-kafka-monitor/README.md

Including these files in the distribution ensures that users have access to the module documentation when downloading the Storm release.

How was the change tested

The change was verified by reviewing the assembly configuration and confirming that the README files are included in the distribution packaging configuration.
Since this change only modifies the assembly descriptor and does not affect runtime code, no additional functional tests were required.

[rzo1]

Can you drop the SSL part from this PR please?

[MNkulkarni06]

Thanks for the feedback. I have removed the incorrect SSL setup section and retained only the valid existing configuration.

[rzo1]

These changes can be removed. They do not belong to this PR.

[MNkulkarni06]

Thanks for the review.

I have removed the incorrect SSL-related changes. The PR now only contains the intended updates.

Please let me know if any further changes are needed.

[rzo1]

Sorry, but if you look into the actual changeset of this PR, you will notice, that the last push removed the README changes and let the TLS/SSL stuff inside the PR: 7ac7684

[MNkulkarni06]

Thanks for the clarification.

I have removed all SSL/TLS-related changes from this PR and kept only the intended updates.

Please let me know if anything else needs to be adjusted.

[rzo1]

This PR is currently empty. I am going to close it. Feel free to open a new one with the targeted changes regarding the README file.