Sleep before retrying redis

Author: Juuso Mäyränen

lib/logstash/inputs/redis.rb

@@ -308,6 +308,7 @@ def list_pattern_runner(output_queue)
       rescue ::Redis::BaseError => e
         @logger.warn("Redis connection problem", :exception => e)
         @redis = nil
+        sleep 1
       end
     end
     @logger.debug("Total items processed: #{@items_processed.value}")