Ceph

Creating this ticket as asked in the pull request [0] to make backporting possible.

[0]: https://github.com/ceph/ceph/pull/53290#issuecomment-1825822454

The ceph-mgr package lost its dependency on python3-bcrypt when the dependencies got moved from d/control to a dh_python3 compatible requires file. Add it again as the bcrypt module is still used there.

Otherwise, one gets errors when, e.g., calling ceph -s after a fresh installation:

13 mgr modules have failed dependencies
    Module 'balancer' has failed dependency: No module named 'bcrypt'
    Module 'crash' has failed dependency: No module named 'bcrypt'
    Module 'devicehealth' has failed dependency: No module named 'bcrypt'
    Module 'iostat' has failed dependency: No module named 'bcrypt'
    Module 'nfs' has failed dependency: No module named 'bcrypt'
    Module 'orchestrator' has failed dependency: No module named 'bcrypt'
    Module 'pg_autoscaler' has failed dependency: No module named 'bcrypt'
    Module 'progress' has failed dependency: No module named 'bcrypt'
    Module 'rbd_support' has failed dependency: No module named 'bcrypt'
    Module 'restful' has failed dependency: No module named 'bcrypt'
    Module 'status' has failed dependency: No module named 'bcrypt'
    Module 'telemetry' has failed dependency: No module named 'bcrypt'
    Module 'volumes' has failed dependency: No module named 'bcrypt'

This got introduced in commit ef19547 ("debian: add .requires for specifying python3 deps")