Updated openstack/openstack
Project: openstack-dev/devstack  b92bb231ecbff285fa293e10f7a1109ad03ba8fc
null
remove database init from horizon

horizon default config no longer uses a session database, it uses
signed cookies instead, so we can stop doing db initialization and
cleanup (which based on errexit we weren't doing correctly anyway).

Change-Id: Icae4318e2784486db2888cbf353e95ac9a5d7cba