The `crush_device_class` option of the `ceph_ec_profile` module was documented
but not implemented.
This commit adds it and ensures its value is updated on the corresponding EC
profile.
Signed-off-by: Benoît Knecht <bknecht@protonmail.ch>
- update `generate_ceph_cmd()` so `user_key` is automatically built from
`cluster` and `user` params.
- update and add testing.
Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>