* tsdb: add support for setting debug flag of tsdb query
* alerting: adds debug flag in eval context
Debug flag is set when testing an alert rule and this debug
flag is used to return more debug information in test aler rule
response. This debug flag is also provided to tsdb queries so
datasources can optionally add support for returning additional
debug data
* alerting: improve test alert rule ui
Adds buttons for expand/collapse json and copy json to clipboard,
very similar to how the query inspector works.
* elasticsearch: implement support for tsdb query debug flag
* elasticsearch: embedding client response in struct
* alerting: return proper query model when testing rule
This fixes a regression introduced in #16646 where using Elasticsearch
pre-v7.0 and alerting resulted in an error when trying to deserialize the
response of total number of hits.
Total number of hits is not in use by the backend so we're removing it
for now to make ES 6 and 7 being able to deserialize search responses
without errors.
Closes#15622
Adds a new version option 7.0+ (70 internally).
Version 7.0+ doesn't include document types in index mappings
so support for handling this have been added.
Version 7.0+ returns number of hits in a different way so
support for handling this have been added.
Version 7.0+ doesn't support sending
max_concurrent_shard_requests in multisearch header so
support for sending this in query string have been added.
Update elastic6 docker block and dashboards (devenv) to use
6.7.1 images, filebeat index name is now filebeat-YYYY.MM.DD
and dashboard include correct tags and links.
Add elastic7 docker block and provisioning (devenv).
Updates documentation regarding new version.
Closes#15622
