resolve service container hostname

[RekGRpth]

how about to resolve service container hostname?
for example as follow

diff --git a/agent.go b/agent.go
index 4a5c2156..162d4b1f 100644
--- a/agent.go
+++ b/agent.go
@@ -640,6 +640,7 @@ func (ep *endpoint) addServiceInfoToCluster(sb *sandbox) error {
                if n.ingress {
                        ingressPorts = ep.ingressPorts
                }
+               ep.myAliases = append(ep.myAliases, sb.config.hostName)
                if err := c.addServiceBinding(ep.svcName, ep.svcID, n.ID(), ep.ID(), name, ep.virtualIP, ingressPorts, ep.svcAliases, ep.myAliases, ep.Iface().Address().IP, "addServiceInfoToCluster"); err != nil {
                        return err
                }

it works with templating hostname as {{.Service.Name}}-{{.Task.Slot}} or {{.Service.Name}}-{{.Node.Hostname}}