Switch from vostok to storagebox (fixes #51)

docs/ssh-hostkeys.txt

@@ -295,14 +295,3 @@
 256 MD5:9a:97:48:f7:11:b3:32:ba:fa:ab:9f:0c:41:41:da:e4 root@archlinux-packer (ED25519)
 3072 MD5:f3:11:d6:58:f9:32:d1:34:fa:4e:d9:e3:d7:c8:6b:f2 root@archlinux-packer (RSA)
 
-# vostok.archlinux.org
-1024 SHA256:FddVsY5JTplRbgQA3m3XA3bYbQ9SOQ8i/gZBlj4NUss root@vostok (DSA)
-256 SHA256:VNBI73QTTzMskhFYissdeC5ZxzsqONu0DuudJWkbxiI root@vostok (ECDSA)
-256 SHA256:NaPE8gB9f0CHLpDf8PexYFKA9OYQ0h6tcG5dIjr7NPw root@vostok (ED25519)
-2048 SHA256:Ap2YWeHDxUVub9qSxEVh1FgefWvjDGDBGjPfHIs/Pv0 root@vostok (RSA)
-
-1024 MD5:52:26:17:aa:59:ce:9b:ef:89:3f:8a:56:04:ed:29:a7 root@vostok (DSA)
-256 MD5:34:cb:51:e7:9f:e0:4c:eb:00:5c:8b:59:9d:ab:4c:60 root@vostok (ECDSA)
-256 MD5:15:11:f7:63:1b:e1:9b:52:e1:c6:87:ac:0f:1e:fb:4a root@vostok (ED25519)
-2048 MD5:b0:03:6c:cc:4d:bf:7c:e9:8b:3f:98:4f:80:ea:4e:56 root@vostok (RSA)
-