Description of problem:
heat-cfn endpoint contains RegionOne region instead of regionOne :

openstack catalog show heat-cfn
+-----------+--------------------------------------------+
| Field     | Value                                      |
+-----------+--------------------------------------------+
| endpoints | RegionOne                                  |
|           |   publicURL: https://172.16.18.25:13005/v1 |
|           |   internalURL: http://10.0.0.13:8000/v1    |
|           |   adminURL: http://10.0.0.13:8000/v1       |
|           |                                            |
| name      | heat-cfn                                   |
| type      | cloudformation                             |
+-----------+--------------------------------------------+


Version-Release number of selected component (if applicable):
openstack-tripleo-heat-templates-5.0.0-0.20160929150845.4cdc4fc.el7ost.noarch

How reproducible:
100%

Steps to Reproduce:
1. Deploy overcloud 
2. Check Keystone catalog

Actual results:
heat-cfn endpoint contains RegionOne region instead of regionOne

Expected results:
heat-cfn endpoint has the ednpoint set as regionOne as the rest of the endpoints.

Additional info: