OAIHarvest: fix path for temporary authorlists

Co-authored-by:	Jerome Caffaro <jerome.caffaro@cern.ch>
Reviewed-by: Tibor Simko <tibor.simko@cern.ch>
Merge branch 'maint-1.1'

* maint-1.1:
  OAIHarvest: fix path for temporary authorlists