T7557: Workaround for upstream paramiko bug

Author: sarthurdev

smoketest/scripts/cli/base_vyostest_shim.py

@@ -158,8 +158,12 @@ def ssh_send_cmd(command, username, password, key_filename=None,
             # Try to login via SSH
             ssh_client = paramiko.SSHClient()
             ssh_client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
+            pkey = None
+            if key_filename:
+                with open(key_filename, 'r') as f:
+                    pkey = paramiko.RSAKey.from_private_key(f)
             ssh_client.connect(hostname=hostname, username=username,
-                               password=password, key_filename=key_filename)
+                               password=password, pkey=pkey)
             _, stdout, stderr = ssh_client.exec_command(command)
             output = stdout.read().decode().strip()
             error = stderr.read().decode().strip()