* WIP - proof of concept
* Update pkg/tsdb/elasticsearch/client/client.go
Co-authored-by: Sven Grossmann <sven.grossmann@grafana.com>
* update and add test
* lint
* Fix lint
* Bring back logging when creating client
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Co-authored-by: Sven Grossmann <sven.grossmann@grafana.com>
* Migrate Elasticsearch to backend plugin SDK
* Fix linting
* Move away from Convey!
* Rebase commit
* Small logger fix
* Fixes according to reviewer's comments
* Fixes according to reviewer's comments
* Fixes according to reviewer's comments
* More cleanup
* Move things around - small refactoring
* Fix typo
* Update calculator - add tests
* Fixes according to reviewer's comments
When weekly index pattern is used, indices names contain single digit week number for week 1-9
This fix makes sure indice names always contain 2 digit week number for weekly pattern