[TOB-K8S-025] Incorrect docker daemon process name in container manager

The container manager used in kubelet checks for docker daemon process either via pidfile
or process name. While the pidfile points to the docker daemon process PID, the
dockerProcessName constant stores a docker cli name ( docker ) instead of docker daemon
name ( dockerd ).

pkg/kubelet/cm/container_manager_linux.go

@@ -67,7 +67,7 @@ import (
 )
 
 const (
-	dockerProcessName     = "docker"
+	dockerProcessName     = "dockerd"
 	dockerPidFile         = "/var/run/docker.pid"
 	containerdProcessName = "docker-containerd"
 	containerdPidFile     = "/run/docker/libcontainerd/docker-containerd.pid"