fix pe_indexing worker that it give an informative message if the stub ELS indexer is being used
fix pe_indexing worker that it give an informative message if the stub ELS indexer is being used


Former-commit-id: 5fb3f6399552ff286f8162b938b167175ef74bdd
SuperCowPowers/workbench,djtotten/workbench,djtotten/workbench,djtotten/workbench,SuperCowPowers/workbench,SuperCowPowers/workbench