Update threadgroup oslo-incubator module
Update threadgroup oslo-incubator module

Changes -
 * Prefer delayed %r formatting over explicit repr use

Change-Id: I1184a71da90cc1b4029018fbff7f14f2a5cb57fd

esikachev/sahara-backup,matips/iosr-2015,openstack/sahara,ekasitk/sahara,redhat-openstack/sahara,redhat-openstack/sahara,zhujzhuo/Sahara,egafford/sahara,redhat-openstack/sahara,esikachev/scenario,zhangjunli177/sahara,egafford/sahara,crobby/sahara,bigfootproject/sahara,openstack/sahara,esikachev/sahara-backup,crobby/sahara,zhangjunli177/sahara,esikachev/scenario,henaras/sahara,crobby/sahara,zhujzhuo/Sahara,zhangjunli177/sahara,esikachev/scenario,henaras/sahara,tellesnobrega/sahara,ekasitk/sahara,esikachev/sahara-backup,zhujzhuo/Sahara,henaras/sahara,tellesnobrega/sahara,ekasitk/sahara,matips/iosr-2015,bigfootproject/sahara,matips/iosr-2015,bigfootproject/sahara