add missing flags in FAQ

Signed-off-by: yogeek <[email protected]>

cluster-autoscaler/FAQ.md

@@ -532,7 +532,7 @@ any nodes left unregistered after this time.
 Every 10 seconds (configurable by `--scan-interval` flag), if no scale-up is
 needed, Cluster Autoscaler checks which nodes are unneeded. A node is considered for removal when **all** below conditions hold:
 
-* The sum of cpu and memory requests of all pods running on this node is smaller
+* The sum of cpu and memory requests of all pods running on this node (DaemonSet pods and Mirror pods are included by default but this is configurable with `--ignore-daemonsets-utilization` and `ignore-mirror-pods-utilization` flags) is smaller
   than 50% of the node's allocatable. (Before 1.1.0, node capacity was used
   instead of allocatable.) Utilization threshold can be configured using
   `--scale-down-utilization-threshold` flag.
@@ -734,6 +734,8 @@ The following startup parameters are supported for cluster autoscaler:
 | `emit-per-nodegroup-metrics` | If true, emit per node group metrics. | false
 | `estimator` | Type of resource estimator to be used in scale up | binpacking
 | `expander` | Type of node group expander to be used in scale up.  | random
+| `ignore-daemonsets-utilization` | Whether DaemonSet pods will be ignored when calculating resource utilization for scaling down | false
+| `ignore-mirror-pods-utilization` | Whether Mirror pods will be ignored when calculating resource utilization for scaling down | false
 | `write-status-configmap` | Should CA write status information to a configmap  | true
 | `status-config-map-name` | The name of the status ConfigMap that CA writes  | cluster-autoscaler-status
 | `max-inactivity` | Maximum time from last recorded autoscaler activity before automatic restart | 10 minutes