Updated openstack/openstack
Project: openstack/heat  0261c144e4a2be70679cd13acbfdf4860d74ed6d

remove default=None for config options

In the cfg module default=None is set as the default value.

Change-Id: Idb78d3e25c79aba0d74fdd747efe2e17b6faa129
Closes-Bug: #1323975