Support multinamespace informer filtering

[jkhelil]

Changes

Support of specifying a list of namespaces to restrict the informer. You can provide a list of namespaces as an argument to the controller, and it will only watch objects (PipelineRuns and TaskRuns) within these specified namespaces. If no list is provided, the controller will default to watching all namespaces.

Submitter Checklist

As the author of this PR, please check off the items in this checklist:

• [x] Has Docs included if any changes are user facing
• [x] Has Tests included if any functionality added or changed
• [x] Follows the commit message standard
• [x] Meets the Tekton contributor standards (including functionality, content, code)
• [x] Release notes block below has been updated with any user facing changes (API changes, bug fixes, changes requiring upgrade notices or deprecation warnings)
• [ ] Release notes contains the string "action required" if the change requires additional action from users switching to the new release

Release Notes

The Chains controller now supports specifying a list of namespaces to restrict the informer. 
You can provide a list of namespaces as an argument to the controller, and it will only watch objects (PipelineRuns and TaskRuns) within these specified namespaces. 
If no list is provided, the controller will default to watching all namespaces.

[tekton-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: To complete the pull request process, please assign priyawadhwa after the PR has been reviewed. You can assign the PR to them by writing /assign @priyawadhwa in a comment when ready.

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Needs approval from an approver in each of these files: - **[OWNERS](https://github.com/tektoncd/chains/blob/main/OWNERS)** Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[tekton-robot]

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

File	Old Coverage	New Coverage	Delta
pkg/reconciler/filter.go	Do not exist	0.0%

[tekton-robot]

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

File	Old Coverage	New Coverage	Delta
pkg/reconciler/filter.go	Do not exist	2.6%
pkg/reconciler/filter.go	Do not exist	3.8%
pkg/reconciler/pipelinerun/controller.go	86.4%	87.0%	0.6
pkg/reconciler/taskrun/controller.go	88.9%	89.5%	0.6

[tekton-robot]

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

File	Old Coverage	New Coverage	Delta
pkg/reconciler/filter.go	Do not exist	1.3%
pkg/reconciler/filter.go	Do not exist	7.7%
pkg/reconciler/pipelinerun/controller.go	86.4%	87.0%	0.6
pkg/reconciler/taskrun/controller.go	88.9%	89.5%	0.6

[tekton-robot]

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

File	Old Coverage	New Coverage	Delta
pkg/reconciler/filter.go	Do not exist	2.6%
pkg/reconciler/filter.go	Do not exist	3.8%
pkg/reconciler/pipelinerun/controller.go	86.4%	87.0%	0.6
pkg/reconciler/taskrun/controller.go	88.9%	89.5%	0.6

[tekton-robot]

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

File	Old Coverage	New Coverage	Delta
pkg/reconciler/filter.go	Do not exist	100.0%
pkg/reconciler/pipelinerun/controller.go	86.4%	87.0%	0.6
pkg/reconciler/taskrun/controller.go	88.9%	89.5%	0.6

[tekton-robot]

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

File	Old Coverage	New Coverage	Delta
pkg/reconciler/filter.go	Do not exist	100.0%
pkg/reconciler/pipelinerun/controller.go	86.4%	87.0%	0.6
pkg/reconciler/taskrun/controller.go	88.9%	89.5%	0.6

[tekton-robot]

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

File	Old Coverage	New Coverage	Delta
pkg/reconciler/filter.go	Do not exist	100.0%
pkg/reconciler/pipelinerun/controller.go	86.4%	87.0%	0.6
pkg/reconciler/taskrun/controller.go	88.9%	89.5%	0.6

[tekton-robot]

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

File	Old Coverage	New Coverage	Delta
pkg/reconciler/filter.go	Do not exist	100.0%
pkg/reconciler/pipelinerun/controller.go	86.4%	87.0%	0.6
pkg/reconciler/taskrun/controller.go	88.9%	89.5%	0.6

[tekton-robot]

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

File	Old Coverage	New Coverage	Delta
pkg/reconciler/filter.go	Do not exist	100.0%
pkg/reconciler/pipelinerun/controller.go	86.4%	87.0%	0.6
pkg/reconciler/taskrun/controller.go	88.9%	89.5%	0.6

[tekton-robot]

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

File	Old Coverage	New Coverage	Delta
pkg/reconciler/filter.go	Do not exist	100.0%
pkg/reconciler/pipelinerun/controller.go	86.4%	87.0%	0.6
pkg/reconciler/taskrun/controller.go	88.9%	89.5%	0.6

[tekton-robot]

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

File	Old Coverage	New Coverage	Delta
pkg/reconciler/filter.go	Do not exist	100.0%

[tekton-robot]

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

File	Old Coverage	New Coverage	Delta
pkg/reconciler/filter.go	Do not exist	100.0%
pkg/reconciler/pipelinerun/controller.go	86.4%	87.0%	0.6
pkg/reconciler/taskrun/controller.go	88.9%	89.5%	0.6

[tekton-robot]

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

File	Old Coverage	New Coverage	Delta
pkg/reconciler/filter.go	Do not exist	100.0%
pkg/reconciler/pipelinerun/controller.go	86.4%	87.0%	0.6
pkg/reconciler/taskrun/controller.go	88.9%	89.5%	0.6

[PuneetPunamiya]

/test pull-tekton-chains-integration-tests

[tekton-robot]

@jkhelil: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-tekton-chains-integration-tests	44b4ca58280b3eeb3d0bfcfe148aa691b32253c3	link	true	/test pull-tekton-chains-integration-tests

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