Updated openstack/openstack
Project: openstack/horizon  6370a3136f9dbd9accce0538b84575413262fd51

Add IMAGE related settings to documentation

Added description of two parameters IMAGE_CUSTOM_PROPERTY_TITLES and
HORIZON_IMAGES_ALLOW_UPLOAD to doc/source/topics/settings.rst
documentation file.

Closes-Bug: 1336071

Change-Id: I6e6780053503086f10c21cacbce981286c42a65b