One more signals fix in riak example
One more signals fix in riak example

openstack/solar,zen/solar,zen/solar,openstack/solar,Mirantis/solar,Mirantis/solar,zen/solar,pigmej/solar,pigmej/solar,loles/solar,openstack/solar,torgartor21/solar,dshulyak/solar,zen/solar,loles/solar,dshulyak/solar,torgartor21/solar,CGenie/solar,loles/solar,pigmej/solar,Mirantis/solar,Mirantis/solar,CGenie/solar,loles/solar