Add log-counter to the Dockerfile

[chotiwat]

Hi, I'm getting the rule path "/home/kubernetes/bin/log-counter" does not exist when trying to use the systemd-monitor-counter.json as a custom plugin monitor. Below is the full log line.

F1227 00:23:30.513039       1 custom_plugin_monitor.go:64] Failed to validate custom plugin config {Plugin:custom PluginGlobalConfig:{InvokeIntervalString:0xc0002d7fb0 TimeoutString:0xc0002d7fc0 InvokeInterval:5m0s Timeout:1m0s MaxOutputLength:0xc000133b18 Concurrency:0xc000133b48} Source:systemd-monitor DefaultConditions:[{Type:FrequentKubeletRestart Status: Transition:0001-01-01 00:00:00 +0000 UTC Reason:NoFrequentKubeletRestart Message:kubelet is functioning properly} {Type:FrequentDockerRestart Status: Transition:0001-01-01 00:00:00 +0000 UTC Reason:NoFrequentDockerRestart Message:docker is functioning properly} {Type:FrequentContainerdRestart Status: Transition:0001-01-01 00:00:00 +0000 UTC Reason:NoFrequentContainerdRestart Message:containerd is functioning properly}] Rules:[0xc000118c40 0xc000118d90 0xc000118e00]}: rule path "/home/kubernetes/bin/log-counter" does not exist. Rule: &{Type:permanent Condition:FrequentKubeletRestart Reason:FrequentKubeletRestart Path:/home/kubernetes/bin/log-counter Args:[--journald-source=systemd --log-path=/var/log/journal --lookback=20m --delay=5m --count=5 --pattern=Started Kubernetes kubelet.] TimeoutString:0xc000300000 Timeout:1m0s}

This pr adds the missing binary, as required by all the *-counter.json, to the container.

[chotiwat]

/assign @Random-Liu

[andyxning]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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