Quick and dirty hack to get interpolated dns values working

Author: Thomas Wunderlich

client/allocrunner/taskrunner/task_runner.go

@@ -1041,10 +1041,14 @@ func (tr *TaskRunner) buildTaskConfig() *drivers.TaskConfig {
 	if alloc.AllocatedResources != nil && len(alloc.AllocatedResources.Shared.Networks) > 0 {
 		allocDNS := alloc.AllocatedResources.Shared.Networks[0].DNS
 		if allocDNS != nil {
+		// could potentially interpolate here
+		interpolatedNetworks := taskenv.InterpolateNetworks(env, alloc.AllocatedResources.Shared.Networks)
+		tr.logger.Info("allocDNS is set", "dnsserver", allocDNS.Servers)
+		tr.logger.Info("interpolatedDNS is set", "dnsserver", interpolatedNetworks[0].DNS.Servers)
 			dns = &drivers.DNSConfig{
-				Servers:  allocDNS.Servers,
-				Searches: allocDNS.Searches,
-				Options:  allocDNS.Options,
+				Servers:  interpolatedNetworks[0].DNS.Servers,
+				Searches: interpolatedNetworks[0].DNS.Searches,
+				Options:  interpolatedNetworks[0].DNS.Options,
 			}
 		}
 	}