BUG-1568 Ssh Handler for netconf client Mina implementation

This implementation of Ssh Handler is asynchronous and based on Apache Mina SSHD.

+ Add Mina SSHD to distribution.

Change-Id: I51f51e2eb56b5f97a87c3d068ea90f8a44adca09
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>
Signed-off-by: Robert Varga <rovarga@cisco.com>
BUG-1568 Remove ganymed Ssh client adapter

Change-Id: Id4ec6140df3e91fd8a219b03ceabca67732af568
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>
Signed-off-by: Robert Varga <rovarga@cisco.com>
Merge "BUG-1568 Ssh Handler for netconf client Mina implementation"
Merge "BUG-1568 Remove ganymed Ssh client adapter"