handle abort flag by the DQM file saver. Avoids writing out files when

exception is thrown, so that hltd can close cleanly that LS. Restores
behavior of the old DQMFileSaver.

DQMServices/FileIO/plugins/DQMFileSaverPB.cc

@@ -103,14 +103,18 @@ void DQMFileSaverPB::saveLumi(const FileParameters& fp) const {
     fms = (evf::FastMonitoringService*)(edm::Service<evf::MicroStateService>().operator->());
   }
 
-  if (fms ? fms->getEventsProcessedForLumi(fp.lumi_) : true) {
+  bool abortFlag = false;
+  if (fms ? fms->getEventsProcessedForLumi(fp.lumi_, &abortFlag) : true) {
     // Save the file in the open directory.
     this->savePB(&*store, openHistoFilePathName, fp.run_, fp.lumi_);
 
     // Now move the the data and json files into the output directory.
     ::rename(openHistoFilePathName.c_str(), histoFilePathName.c_str());
   }
 
+  if (abortFlag)
+    return;
+
   // Write the json file in the open directory.
   bpt::ptree pt = fillJson(fp.run_, fp.lumi_, histoFilePathName, transferDestination_, mergeType_, fms);
   write_json(openJsonFilePathName, pt);