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3c9749b2b8
This adds an empty _ingest/pipeline named after the _current_ version of the Monitoring API (currently 2) from both exporters. This allows us to eventually change the API version (to 3, 4, etc.) and go _back_ and modify the pipeline that exists. The modified pipeline would then "fix" the documents as best as possible and rename the index. As a result, different versions (starting with 5.0) will be able to report to the same monitoring cluster regardless of the running API version. Note: This has no impact on stale data (e.g., the day before the upgrade) _and_ it implies that the monitoring cluster should always be updated first. A simple reindexing script can be supplied for old data, which can be done at the discretion of the user. Original commit: elastic/x-pack-elasticsearch@45df5ee87b