MetricsReporter fails on nil nodeStatus.Status

[rafalbigaj]

/kind bug

What steps did you take and what happened:
In some failure scenarios the Status in PipelineRunTaskRunStatus can be nil. collectNodeMetricsOrNil is unsafe and crashes.

What did you expect to happen:
This corner case should be ignored.

Additional information:
N/A

Environment:

• Python Version (use python --version):
• SDK Version:
• Tekton Version (use tkn version):
• Kubernetes Version (use kubectl version):
• OS (e.g. from /etc/os-release):

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[Tomcli]

done
/close

[k8s-ci-robot]

@Tomcli: Closing this issue.

In response to this:

done
/close

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