Fix the HeatTestCase import issue as required by H302, a following patch of https://review.openstack.org/#/c/129846/ Change-Id: Iab9a508682e9fe2932b7d00b191c8a4cdea4738b
Fix the HeatTestCase import issue as required by H302, a following patch of https://review.openstack.org/#/c/129846/ Change-Id: Iab9a508682e9fe2932b7d00b191c8a4cdea4738b