Sync latest Oslo components for updated copyright.
Sync latest Oslo components for updated copyright.

fixes bug 1154837

This resolves the issue by updating with the latest Oslo changes. These
changes correct the copyright attribution missing from an earlier Oslo
change.

Change-Id: Ic04197bf4bf026b1b48920a5a99397e6183f5ff3

openstack/networking-bigswitch,wolverineav/networking-bigswitch,stackforge/networking-bigswitch,stackforge/networking-bigswitch,wolverineav/networking-bigswitch,openstack/networking-bigswitch