Reorganize secrets and ssh keys

The agenix tools needs to read the secrets from a standalone file, but
we also need the same information for the SSH keys.

secrets/ceph-user.age

@@ -0,0 +1,21 @@
+age-encryption.org/v1
+-> ssh-ed25519 AY8zKw J00a6ZOhkupkhLU5WQ0kD05HEF4KKsSs2hwjHKbnnHU
+J14VoNOCqLpScVO7OLXbqTcLI4tcVUHt5cqY/XQmbGs
+-> ssh-ed25519 sgAamA k8R/bSUdvVmlBI6yHPi5NBQPBGM36lPJwsir8DFGgxE
+4ZKC3gYvic6AVrNGgNjwztbUzhxP8ViX5O3wFo9wlrk
+-> ssh-ed25519 HY2yRg 966xf2fTnA6Wq0uYXbXZQOManqITJcCbQS9LZCGEOh4
+Qg5echQSrzqeDqvaMx+5fqi8XyTjAeCsY/UFJX6YnDs
+-> ssh-ed25519 tcumPQ e0U2okrGIoUpLfPYjIRx1V92rE3hZW13nJef+l3kBQg
+LejAUKBl+tPhwocCF00ZHTzFISnwX8og8GvemiMIcyo
+-> ssh-ed25519 JJ1LWg QkzTsPq9Gdh+FNz/a4bDb9LQOreFyxeTC51UNd1fsj0
+ayrlKenETfQzH1Z9drVEWqszQebicGVJve0/pCnxAE8
+-> ssh-ed25519 CAWG4Q lJLW9+dxvyoD4hYzeXeE/4rzJ6HIeEQOB1+fbhV3xw0
+T2RrVCtTuQvya9HiJB7txk3QGrntpsMX9Tt1cyXoW5E
+-> ssh-ed25519 MSF3dg JOZkFb2CfqWKvZIz7lYxXWgv8iEVDkQF8hInDMZvknc
+MHDWxjUw4dNiC1h4MrU9uKKcI3rwkxABm0+5FYMZkok
+-> ~8m;7f-grease
+lDIullfC98RhpTZ4Mk87Td+VtPmwPdgz+iIilpKugUkmV5r4Uqd7yE+5ArA6ekr/
+G/X4EA
+--- Cz4sv9ZunBcVdZCozdTh1zlg1zIASjk2MjYeYfcN9eA
+<EFBFBD>N	<09>$[H<><48>Q<EFBFBD><51><EFBFBD>
+d<EFBFBD><EFBFBD><EFBFBD>'<27><><EFBFBD>7<EFBFBD><1F>Ͳ)<29><><EFBFBD><17>x9y<39><79><EFBFBD>E<04><><EFBFBD>M7^<5E>[<5B>M<EFBFBD>+<2B>&<26><><EFBFBD><0E>$8tM<74>в