+ for k in RSA_KEYPAIR_FILES:
+ ssh.scp_get(os.path.join(RSA_KEYPAIR_PATH, k),
+ local=os.path.join(cache_sha_dir, k))
-+ ssh.exec_cmd('tar cf %s %s/*', remote_tar,
-+ os.path.join(NAILGUN_PATH, NAILGUN_ACT_BOOTSTRAP_SUBDIR))
++ ssh.exec_cmd('tar cf %s %s/*' % (remote_tar,
++ os.path.join(NAILGUN_PATH, NAILGUN_ACT_BOOTSTRAP_SUBDIR)))
+ ssh.scp_get(remote_tar, local=local_tar)
-+ ssh.exec_cmd('rm -f %s', remote_tar)
++ ssh.exec_cmd('rm -f %s' % remote_tar)
+
+ def __extract_targetimages(self, ssh, cache_sha_dir):
+ """Collect target image artifacts from Fuel over SSH/SCP"""