Fix cleanup of csv parser options, use per file parser (#4712)

plugins/inputs/logparser/logparser.go

@@ -191,15 +191,13 @@ func (l *LogParserPlugin) tailNewfiles(fromBeginning bool) error {
 					Poll:      poll,
 					Logger:    tail.DiscardingLogger,
 				})
-
-			//add message saying a new tailer was added for the file
-			log.Printf("D! tail added for file: %v", file)
-
 			if err != nil {
 				l.acc.AddError(err)
 				continue
 			}
 
+			log.Printf("D! [inputs.logparser] tail added for file: %v", file)
+
 			// create a goroutine for each "tailer"
 			l.wg.Add(1)
 			go l.receiver(tailer)