[stable/nginx-ingress] Remove need for cluster role in scoped mode

[hypnoce]

What this PR does / why we need it:

https://github.com/helm/charts/pull/9637/files introduced breaking changes when deploying the chart using a namespace-limited service account.

kubernetes/ingress-nginx#3887 Removed the need to cluster-level access.
This PR reverts #9637

Which issue this PR fixes

• fixes [stable/nginx-ingress] #9637 Breaks installing nginx with rbac without cluster-level access #12510, fixes [stable/nginx-ingress] namespace scoped installation not longer possible because of Bugfix #9636  #11033

Checklist

• DCO signed
• Chart Version bumped
• Variables are documented in the README.md
• title of the PR contains starts with chart name e.g. [stable/chart]

[k8s-ci-robot]

Hi @hypnoce. Thanks for your PR.

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[hypnoce]

@jackzampolin you were suggested as a reviewer :)

[ChiefAlexander]

/assign
/ok-to-test

[hypnoce]

Rebased. Thanks !

[ChiefAlexander]

Thanks for the PR.
/lgtm

[ChiefAlexander]

You are going to need to bump the version again :)

[hypnoce]

Done

[ChiefAlexander]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ChiefAlexander, hypnoce

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