refined logic in clear_lock celery task to clear lock only when necessary
refined logic in clear_lock celery task to clear lock only when necessary

RENCI/xDCIShare,ResearchSoftwareInstitute/MyHPOM,RENCI/xDCIShare,FescueFungiShare/hydroshare,FescueFungiShare/hydroshare,FescueFungiShare/hydroshare,hydroshare/hydroshare,RENCI/xDCIShare,ResearchSoftwareInstitute/MyHPOM,hydroshare/hydroshare,ResearchSoftwareInstitute/MyHPOM,hydroshare/hydroshare,RENCI/xDCIShare,ResearchSoftwareInstitute/MyHPOM,hydroshare/hydroshare,FescueFungiShare/hydroshare,RENCI/xDCIShare,FescueFungiShare/hydroshare,hydroshare/hydroshare,ResearchSoftwareInstitute/MyHPOM