Hi everyone.

Since congress service has been retired with [1], there's no reason for us to carry on and maintain os_congress role [2] for the inactive project. In case congress service will be revived, we can revert role retirement and continue its support in the future.

[1] https://review.opendev.org/#/c/721733/
[2] https://opendev.org/openstack/openstack-ansible-os_congress

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Kind regards,
Dmitriy Rabotyagov