[bugfix] pass the wrong argument to rally
[bugfix] pass the wrong argument to rally

Change-Id: I23ff06b53e45e9aa226f430e7d2fb75025281b9e
Signed-off-by: meimei <02a626b47b9789906e476a49037c28d395672888@huawei.com>

opnfv/functest,opnfv/functest,mywulin/functest,mywulin/functest