Corrected if statement for clean_openstack
Corrected if statement for clean_openstack

Change-Id: I3d8c0cb81dc4906ea989bd36dc8c29bf9f1f6396
Signed-off-by: vitikkan <478f7ca616a7d23ed1ae94747b74c4df3ef9bdf3@nokia.com>

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