Updated openstack/openstack
Project: openstack/horizon  2043424b327777ea8770b7cc46d464bea7e008e4

Add graduated oslo code to requirements

This is the first step of the oslo usage cleanup.
The patches to clean-up the local copy of oslo code
will be submitted separately.

Change-Id: Ic59275e78478c328517960f010095b86f0030402
Partially-Implements: blueprint improve-oslo-usage