Merge pull request #3051 from brendandburns/flake

Add a PodUnknown phase and make ListPods return even when there are errors

pkg/api/types.go

@@ -365,6 +365,9 @@ const (
 	// PodFailed means that all containers in the pod have terminated, and at least one container has
 	// terminated in a failure (exited with a non-zero exit code or was stopped by the system).
 	PodFailed PodPhase = "Failed"
+	// PodUnknown means that for some reason the state of the pod could not be obtained, typically due
+	// to an error in communicating with the host of the pod.
+	PodUnknown PodPhase = "Unknown"
 )
 
 type ContainerStateWaiting struct {