Add new ssh provider type

[Sylvain Hellegouarch]

It would be useful in a lot of scenarios to run remote actions/probes over ssh.

[Sylvain Hellegouarch]

Rather than doing this is as a provider. If you are looking to use ssh, just do as follows:

{
    "title": "do stuff over ssh",
    "description": "n/a",
    "configuration": {
        "ssh_host": "127.0.0.1",
        "ssh_port": 22,
        "ssh_command": "uname -a"
    },
    "method": [
        {
            "type": "action",
            "name": "run-command-remotely",
            "provider": {
                "type": "process",
                "path": "ssh",
                "arguments": "${ssh_host} -p ${ssh_port} ${ssh_command}"
            }
        }
    ]
}