Jumphost support

[matsmcp]

we do need support for jumping through Jump/bastion hosts. IE SSH -J if done manually
I have tried to look for it but I haven't found any way to do that.

We have to follow the connection pattern of Adminbox -> Jumphost ->target system due to security requirements. Our jumphosts have /bin/false as usershell so we can't log on to them and do a seccond jump

Therefore this request to implement the Jumphost support