Increase time we linger waiting for delete
Increase time we linger waiting for delete

Change-Id: Ie4170660715aa59108dab47d1fb1fd81c84af667

briancurtin/python-openstacksdk,mtougeron/python-openstacksdk,openstack/python-openstacksdk,dudymas/python-openstacksdk,mtougeron/python-openstacksdk,openstack/python-openstacksdk,dtroyer/python-openstacksdk,briancurtin/python-openstacksdk,stackforge/python-openstacksdk,dudymas/python-openstacksdk,stackforge/python-openstacksdk,dtroyer/python-openstacksdk