Have rhc --debug also put ssh into debugin mode

If RHC debuging is enabled SSH debugging should also be enabled. This keeps you from having to debug rhc as the issue or if ssh is the issue. With this it can be examined all at the same time. 
Maybe embed the '-vvv' as a conditional inside the array, like
```command_line = [ ssh.split, ('-vvv' if debug?), rest_app.ssh_string.to_s, command].flatten.compact```