[main] add hpa under options and support pod template labels and annotations

[jkandasa]

Changes

• update/create HorizontalPodAutoscaler support added via options
• fixes: SRVKP-3731 - tekton-pipelines-webhook HorizontalPodAutoscaler should be set to minReplicas:2
• pod template labels and annotations supported by options. Fixes: Extend custom annotations support in TektonConfig #1903
• closes: add support for labels and annotations in deployment template options #1812

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Release Notes

- Added support to update/create HorizontalPodAutoscaler via `options`.
- Added support for adding labels and annotations on Deployments and StatefulSets podTemplate via `options`.

[tekton-robot]

The following is the coverage report on the affected files.
Say /test pull-tekton-operator-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
pkg/reconciler/common/transformer_additional_options.go	90.1%	88.0%	-2.1

[tekton-robot]

The following is the coverage report on the affected files.
Say /test pull-tekton-operator-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
pkg/reconciler/common/transformer_additional_options.go	90.1%	88.0%	-2.1

[tekton-robot]

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[piyush-garg]

/lgtm