Reinstate WaitForSSH
Reinstate WaitForSSH

Signed-off-by: Robert Breker <bfcd7039ca4b92386f0756a1d5e67ea4ff23cfe0@citrix.com>

xenserver/docker-machine-driver-xenserver,robertbreker/docker-machine-driver-xenserver,xenserver/docker-machine-driver-xenserver,robertbreker/docker-machine-driver-xenserver