feat: update RBAC to include listing TempoMonolithic CRs

[andreasgerstmayr]

Update RBAC to include listing TempoMonolithic CRs.
Soon the Distributed Tracing UI Plugin will support Tempo deployments in monolithic mode (TempoMonolithic CR).

https://issues.redhat.com/browse/OU-490

cc @jgbernalp

[openshift-ci]

Hi @andreasgerstmayr. Thanks for your PR.

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[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: andreasgerstmayr, jgbernalp

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