fixed openstack handler for cinder tests
fixed openstack handler for cinder tests

codilime/cloudify-system-tests,cloudify-cosmo/cloudify-system-tests,isaac-s/cloudify-system-tests,codilime/cloudify-system-tests,cloudify-cosmo/cloudify-system-tests,isaac-s/cloudify-system-tests,isaac-s/cloudify-system-tests,codilime/cloudify-system-tests