c.Assert(err, check.IsNil)
cluster, err := cfg.GetCluster("")
c.Assert(err, check.IsNil)
+ cluster.Containers.ReserveExtraRAM = 256 << 20
cluster.Containers.CloudVMs.PollInterval = arvados.Duration(time.Second / 4)
cluster.Containers.MinRetryPeriod = arvados.Duration(time.Second / 4)
cluster.InstanceTypes = arvados.InstanceTypeMap{