Add a WIP change and update paramiko client to re-use existing sftp connection.
Add a WIP change and update paramiko client to re-use existing sftp
connection.

Kami/libcloud,apache/libcloud,apache/libcloud,Kami/libcloud,Kami/libcloud,apache/libcloud,andrewsomething/libcloud,mistio/libcloud,mistio/libcloud,mistio/libcloud,andrewsomething/libcloud,andrewsomething/libcloud