* Elasticsearch: Add Moving Function Pipeline Aggregation
* Removing support for moving average in 7.x
* Fixing getMetricAggTypes to handle undefined esVersion
* Adding moving_fn to go code
* Update public/app/plugins/datasource/elasticsearch/metric_agg.ts
Co-authored-by: Giordano Ricci <grdnricci@gmail.com>
* Adding test for esversion 70
* Removing default value for script, adding placeholder instead
* Fixing formatting
* Adding code for handling missing or obsolete aggregations
Co-authored-by: Giordano Ricci <grdnricci@gmail.com>
Removes moment dependency.
Adds response parser tests (based on frontend tests).
Adds time series query tests (based on frontend tests).
Fixes various issues related to response parsing and building search request queries.
Added support for extended stats metrics and geo hash grid aggregations.
