Document and verify that we support Python 3.4

Closes #279

Signed-off-by: Tomaz Muraus <tomaz@apache.org>
add a deprecated flag to a size

Signed-off-by: Tomaz Muraus <tomaz@apache.org>
Add "deprecated" attribute to the Node object in the GCE driver.

Closes #276
Update Softlayer driver to use "fullyQualifiedDomainName" attribute
instead of "hostname" for the node name.

Closes #280

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