SSH ciphers

Got this error on every server that I have : 

```
WARN[0020] Failed to ssh root@xxx err: ssh: handshake failed: ssh: no common algorithm for client to server cipher; client offered: [aes128-ctr aes192-ctr aes256-ctr aes128-gcm@openssh.com arcfour256 arcfour128], server offered: [aes256-cbc], Retrying in 10.034154425s...
```

And i have to disable my cipher to use vuln.
