Update oslo-incubator excutils module
Update oslo-incubator excutils module

Changes -
 * save_and_reraise_exception: make logging respect the reraise parameter

Change-Id: Ic2c0f482f7f8dd0657f8738c19f622fbd501b3a8

redhat-openstack/sahara,redhat-openstack/sahara,zhangjunli177/sahara,henaras/sahara,matips/iosr-2015,esikachev/sahara-backup,ekasitk/sahara,esikachev/scenario,zhangjunli177/sahara,zhangjunli177/sahara,bigfootproject/sahara,esikachev/sahara-backup,citrix-openstack-build/sahara,mapr/sahara,tellesnobrega/sahara,xme1226/sahara,openstack/sahara,keedio/sahara,mapr/sahara,keedio/sahara,ekasitk/sahara,mapr/sahara,tellesnobrega/sahara,matips/iosr-2015,keedio/sahara,citrix-openstack-build/sahara,openstack/sahara,esikachev/sahara-backup,zhujzhuo/Sahara,esikachev/scenario,redhat-openstack/sahara,henaras/sahara,crobby/sahara,bigfootproject/sahara,crobby/sahara,xme1226/sahara,henaras/sahara,zhujzhuo/Sahara,xme1226/sahara,citrix-openstack-build/sahara,ekasitk/sahara,bigfootproject/sahara,zhujzhuo/Sahara,egafford/sahara,matips/iosr-2015,esikachev/scenario,egafford/sahara,crobby/sahara