Updated openstack/openstack
Project: openstack/horizon  5663a04b5cfa1edaac4804db35d69ecc910a39fe

Handle TypeError from table column summation code

This commit catches TypeError from horizon.tables.Column
summation calculation. This TypeError is caught inside Django
until Django 1.6, but Django 1.7 code is refined to catch
more specific case and it leads to horizon unit test failure.

Closes-Bug: #1355939
Change-Id: I9d5b4565f1238a9880ccf117f2ea623fed466a44