Add reason label into kube_horizontalpodautoscaler_status_condition

[voanhduy1512]

What this PR does / why we need it: Add reason label for HPA Status Condition. Right now the current metric shows only status true/false for conditions, not their reason so you can't categorise why various HPAs are failing.

How does this change affect the cardinality of KSM: (increases, decreases or does not change cardinality) None

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged): Fixes #1299

[linux-foundation-easycla[bot]]

The committers listed above are authorized under a signed CLA.

• :white_check_mark: login: voanhduy1512 / name: Võ Anh Duy (5b90ab45b5abfce3b2b815b5abf8db5075ffc3e7)

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[logicalhan]

/triage accepted

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PR needs rebase.

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[dgrisonnet]

@voanhduy1512 are you still planning to work on this PR?

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/lifecycle stale

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/lifecycle rotten

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/close

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@k8s-triage-robot: Closed this PR.

In response to this:

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/close

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