Modify deploy_node so it's future proof and will also work correctly when
authentication bug (https://github.com/paramiko/paramiko/pull/351) has been
fixed in paramiko.
Merge branch 'trunk' of https://git-wip-us.apache.org/repos/asf/libcloud into trunk
Updating Compute Engine image project list

Signed-off-by: Tomaz Muraus <tomaz@apache.org>