Fix fetching files with scp (#18673)

Commit ec2521f intended to fix the scp command to fetch files
from a remote machine but it has src and dest swapped.

This change correctly treats src as the location in the remote machine
and dest as the location in the local machine.

Signed-off-by: Alberto Murillo Silva <alberto.murillo.silva@intel.com>

lib/ansible/plugins/connection/ssh.py

@@ -629,7 +629,7 @@ class Connection(ConnectionBase):
                 in_data = u"{0} {1} {2}\n".format(sftp_action, shlex_quote(in_path), shlex_quote(out_path))
             elif method == 'scp':
                 if sftp_action == 'get':
-                    cmd = self._build_command('scp', u'{0}:{1}'.format(host, shlex_quote(out_path)), in_path)
+                    cmd = self._build_command('scp', u'{0}:{1}'.format(host, shlex_quote(in_path)), out_path)
                 else:
                     cmd = self._build_command('scp', in_path, u'{0}:{1}'.format(host, shlex_quote(out_path)))
                 in_data = None