[kbn/es] Add dev docs for snapshot promotion pipeline (#148350)

There was recent discussion on tracking down a possible ES regression,
and the best way to find the snapshot build schedule. This updates our
dev docs to include links to the snapshot update pipelines.
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Jonathan Budzenski 2023-01-05 12:45:34 -06:00 committed by GitHub
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@ -70,6 +70,16 @@ Type: `String`
Location where snapshots are cached
## Snapshot Updates
Snapshots are built and tested daily. If tests pass, the snapshot is promoted and will automatically be used when started from the CLI.
CI pipelines supporting this can be found at:
- https://buildkite.com/elastic/kibana-elasticsearch-snapshot-build
- https://buildkite.com/elastic/kibana-elasticsearch-snapshot-verify
- https://buildkite.com/elastic/kibana-elasticsearch-snapshot-promote
## Snapshot Pinning
Sometimes we need to pin snapshots for a specific version. We'd really like to get this automated, but until that is completed here are the steps to take to build, upload, and switch to pinned snapshots for a branch.