Commits on Apr 2, 2020

1. Fix redundant operator in activemq ingest pipeline …

   Grok processor has a redundant `*` operator in a regular expression,
   which causes the following warning to be printed to the Elasticsearch
   logs every time the pipeline is loaded:
   
   ```
   regular expression has redundant nested repeat operator * /(?<TIMESTAMP_ISO8601:timestamp>(?:(?>\d\d){1,2})-(?:(?:0?[1-9]|1[0-2]))-(?:(?:(?:0[1-9])|(?:[12][0-9])|(?:3[01])|[1-9]))[T ](?:(?:2[0123]|[01][0-9])):?(?:(?:[0-5][0-9]))(?::?(?:(?:(?:[0-5]?[0-9]|60)(?:[:.,][0-9]+)?)))?(?:(?:Z|[+-](?:(?:2[0123]|[01]?[0-9]))(?::?(?:(?:[0-5][0-9])))))?)(?:\s*)\|(?:\s*)(?<LOGLEVEL:log.level>([Aa]lert|ALERT|[Tt]race|TRACE|[Dd]ebug|DEBUG|[Nn]otice|NOTICE|[Ii]nfo|INFO|[Ww]arn?(?:ing)?|WARN?(?:ING)?|[Ee]rr?(?:or)?|ERR?(?:OR)?|[Cc]rit?(?:ical)?|CRIT?(?:ICAL)?|[Ff]atal|FATAL|[Ss]evere|SEVERE|EMERG(?:ENCY)?|[Ee]merg(?:ency)?))(?:\s*)\|(?:\s*)(?<NOPIPEGREEDYDATA:message>((?! \|).)*)(?:\s*)\|(?:\s*)(?<NOPIPEGREEDYDATA:activemq.caller>((?! \|).)*)(?:\s*)\|(?:\s*)(?<THREAD_NAME:activemq.thread>((?!
   ).)*)(?:\s*)?(?<GREEDYMULTILINE:activemq.log.stack_trace>(.|\n|\t)*)/
   ```

   

   adriansr committed Apr 2, 2020
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