Updated openstack/openstack
Project: openstack/heat  50dc14af4f78f0d4050f82545aae6910a92aa8cf
null
Use "python -m coverage" instead of coverage cli

As requested by the Debian package maintainer, this makes the
coverage report work more easily on Debian/Ubuntu

Change-Id: Ibed9e164c89543b679393ee18ccdb4a15bdea6d7
Closes-Bug: #1241330