Updated openstack/openstack
Project: openstack/heat  a4ed8eaa129171e5029dd49ad1c453fc49776932

Bring the fakelogging closer to olsotest

- use the same log fomat
- honor the OS_DEBUG environment variable (off now by default)
- quiten sqlalchemy down to warning

Change-Id: I828e3bb81b1f97457db3ff8b85db7b23b73a005e