elk: upgrade journalbeat and filebeat

• Remove the journalbeat 5.5.0 service configuration
• remove the journalbeat user not needed anymore
• deploy the elasticsearch packages (journalbeat and filebeat)
• cleanup the temporary configuration
• cleanup the old cursor position, when the version will be updated the beginning of the journal will be reingested
• update the logstash configuration to support the messages from the old journalbeat version and the new version in parallel
• allow to override the beat version for node with an elasticsearch version specified (swh-search)
• upate the check_journal script to use the new registry file to check the cursor position
• Automatically declare the index template from the logstash host

Related to T3705