OpenShift Logging operator shows "Namespace does not support installation mode" error in RHOCP
Issue
OpenShift Loggingoperator shows below mentioned error message while installing:- Reinstalling of
OpenShift Loggingoperator does not allow it throwing the error:The OperatorGroup in the openshift-logging Namespace does not support the global installation mode. Select a different installation Namespace that supports this mode.

Environment
- Red Hat OpenShift Container Platform (RHOCP)
- 4
- Red Hat OpenShift Logging (RHOL)
- 5
- 6
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