Revert rbac optim

[jkhelil]

Changes

CreateResource function is ensuring rbac resource for opensift namespaces. When implemented through concurrency, we observed unstability due the fact that concurrent workers tries to update a shared object clusterinterceptor cluster role binding. concurrency seems not bring improvement in performance, and bring unstability
The fix reverts concurrency implementation and fixes the creates resource function to not block the hole reconciliation when an issue is observed for one namespace

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Release Notes

[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/openshift/tektonconfig/common.go	54.8%	0.0%	-54.8
pkg/reconciler/openshift/tektonconfig/rbac.go	45.6%	0.0%	-45.6

[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/openshift/tektonconfig/common.go	54.8%	0.0%	-54.8
pkg/reconciler/openshift/tektonconfig/rbac.go	45.6%	0.0%	-45.6

[savitaashture]

Tested locally by upgrading from release-v0.71.x to this PR changes
Steps:

• Installed Operator from release-v0.71.x branch
• Created tls eventlistener under releasetest-upgrade-tls ns and verified its working by sending request
• Upgraded Operator with this PR changes
• Observed that releasetest-upgrade-tls namespace has not removed from openshift-pipelines-clusterinterceptors clusterrolebinding
• Sent request to EL and verified its success

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: savitaashture

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[savitaashture]

cc @PuneetPunamiya

[PuneetPunamiya]

/lgtm

[jkhelil]

/cherry-pick release-v0.73.x

[tekton-robot]

@jkhelil: new pull request created: #2349

In response to this:

/cherry-pick release-v0.73.x

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