Fix ansible_ssh_host again

This time with unit tests to ensure it keeps working.

lib/ansible/runner/__init__.py

@@ -393,7 +393,7 @@ class Runner(object):
             if actual_port is not None:
                 actual_port = int(actual_port)
             conn = self.connector.connect(actual_host, actual_port)
-            if delegate_to:
+            if delegate_to or host != actual_host:
                 conn.delegate = host