Add "secrets" to doc/glossary.rst.
Signed-off-by: Zac Dover <zac.dover@gmail.com>
Amazon S3 RESTful API and the OpenStack Swift API. Also called
"RADOS Gateway" and "Ceph Object Gateway".
+ secrets
+ Secrets are credentials used to perform digital authentication
+ whenever privileged users must access systems that require
+ authentication. Secrets can be passwords, API keys, tokens, SSH
+ keys, private certificates, or encryption keys.
+
SDS
Software-defined storage.