Use client region if specified
Use client region if specified

This allows us to use a central sensu server and have clients in different regions.
majormoses/sensu-plugins-aws,obazoud/sensu-plugins-aws,brendangibat/sensu-plugins-aws,nyxcharon/sensu-plugins-aws,nyxcharon/sensu-plugins-aws,sstarcher/sensu-plugins-aws,nickjacques/sensu-plugins-aws,sensu-plugins/sensu-plugins-aws,majormoses/sensu-plugins-aws,nickjacques/sensu-plugins-aws,obazoud/sensu-plugins-aws