Commits on May 14, 2020

1. kubelet: fix /stats/summary endpoint on Windows when init-container… …

   …s are present on the node
   
   Following changes in kubernetes#87730, Kubelet is directly hcsshim to gather stats.
   However, unlike `docker stats` API that was used before, hcsshim does not
   keep information about exited containers.
   
   When the Kubelet lists containers (`docker_container.go:ListContainers()`),
   it sets `All: true`, retrieving non-running containers.
   
   When docker stats is called with such container id, it'll return a valid JSON
   with all values set to 0. The non-running containers are filtered later on in the process.
   
   When the hcsshim is called with such container id, it'll return an error, effectively
   stopping the stats retrieval for all containers.

   

   vboulineau committed May 14, 2020
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