Add support for SSH jump host configuration

Some servers could use jump hosts for access, in order to achieve this the SSH config file needs to be customized in the following manner:

```
Host jumphost
  HostName TEST_SSH_HOST_JUMPHOST
  User TEST_SSH_USER_JUMPHOST
  IdentityFile ~/.ssh/server.key
  StrictHostKeyChecking no

Host server
  HostName TEST_SSH_HOST
  User TEST_SSH_USER
  ProxyJump jumphost
```