Update ruckus_fastiron.py KexAlgorithms & HostKeyAlgorithms

[EdificomSA]

Add _modify_connection to add DH group 14 & g1 KexAlgorithms and ssh-rsa HostKeyAlgorithms

[ktbyers]

Why do you retrieve paramiko_transport, but then change and reference paramiko.Transport?

Shouldn't it be:

        paramiko_transport = getattr(paramiko, "Transport")
        paramiko_transport._preferred_kex.add(
            "diffie-hellman-group14-sha1",
            "diffie-hellman-group1-sha1",
        )
        paramiko_transport._preferred_keys.add(
            "ssh-rsa",
        )

[ktbyers]

These all look like they are already there by default? Why do we need this change?

>>> paramiko.Transport._preferred_kex
('[email protected]', 'ecdh-sha2-nistp256', 'ecdh-sha2-nistp384', 'ecdh-sha2-nistp521', 'diffie-hellman-group16-sha512', 'diffie-hellman-group-exchange-sha256', 'diffie-hellman-group14-sha256', 'diffie-hellman-group-exchange-sha1', 'diffie-hellman-group14-sha1', 'diffie-hellman-group1-sha1')
>>> paramiko.Transport._preferred_keys
('ssh-ed25519', 'ecdsa-sha2-nistp256', 'ecdsa-sha2-nistp384', 'ecdsa-sha2-nistp521', 'rsa-sha2-512', 'rsa-sha2-256', 'ssh-rsa', 'ssh-dss')