* feat: adding lookup limit to OpenTSDB settings

Adding lookup to OpenTSDB datasource settings and using it in the datasource for tag value lookup and suggest

* Document the change.

* feat: UI for configuring OpenTSDB lookup limit.

* Apply prettier.

* Fix compilation error.

Added CODEOWNERS file, made myself the owner of the docs directory.

dingding notifier fails to send alert messages containing JSON, 
This change use map and json.Marshal to always produce valid 
JSON body.

Fixes #9771

* Logs: Optional logs label column

- reintroduces label column that was removed when log details were
introduced
- added to explore and also as a new option to logs panel
- explore column settings now stored in localstorage
- labels are rendered with font size xs
- labels that start with `_` or are called `level` or `filename` are not
displayed
- removed click handlers and moved remaining `LogLabel` logic into `LogLabels`

* Added prop to satisfy interface

* Review feedback

* removed comment

* Changed label of label column switch

Moving info log from phantomjs to rendering service 
so it's logged for all kinds of renderers.
Add debug log for image renderer plugin and remote 
renderer.

* Fix: Shows SubMenu when filtering from table
Fixes #20270

* Tests: Updates snapshots

* Refactor: Changes after PR comments

* Refactor: Changes template

Fixes #20775

Change in behavior:

- no longer suggest everything in empty field, only history
- term suggestions need at least one character

* Update requests and responses

* Add basic auth example

* Add support for primitive values/onchange

* Fix segment clickaway bug

* Fix onchange

* Use primitive in cloudwatch

* Add placeholder

* Use placeholder in cloudwatch editor

* Fix lint error

* Fix lodash import

* Use new component story format

* Add support for autofocus

* Use selectable value for onchange event

* Fix lint error

* remove non-searchable option

* fix unit test

Signed-off-by: Kevin Labesse <kevin@labesse.me>

* fix unit test

Upgrading aws-sdk-go since there's additional changes 
for IMDSv2 support.

* UI: ConfirmModal component based on Modal

* UI: refactor ConfirmModal after Modal changes

* UI: use Icon component for Modal

* UI: ConfirmModal tests

* UI: ConfirmModal story

* Docs: Updates from puppeteer to Cypress

* e2e: Adds documentation

* Docs: Adds link to e2e framework from contributing

* Docs: Updates after PR comments

* Update contribute/style-guides/e2e.md

Co-Authored-By: Arve Knudsen <arve.knudsen@gmail.com>

* Update contribute/style-guides/e2e.md

Co-Authored-By: Arve Knudsen <arve.knudsen@gmail.com>

* Update contribute/style-guides/e2e.md

Co-Authored-By: Arve Knudsen <arve.knudsen@gmail.com>

* Update contribute/style-guides/e2e.md

Co-Authored-By: Arve Knudsen <arve.knudsen@gmail.com>

* Update contribute/style-guides/e2e.md

Co-Authored-By: Arve Knudsen <arve.knudsen@gmail.com>

* Update contribute/style-guides/e2e.md

Co-Authored-By: Diana Payton <52059945+oddlittlebird@users.noreply.github.com>

* Update contribute/style-guides/e2e.md

Co-Authored-By: Arve Knudsen <arve.knudsen@gmail.com>

* Update contribute/style-guides/e2e.md

Co-Authored-By: Diana Payton <52059945+oddlittlebird@users.noreply.github.com>

* Docs: Breaks a long sentance in two

* e2e: Adds log output when you use a selector

* e2e: Adds more log output

* Refactor: Changes after PR comments

* Prometheus: disable dynamic label lookup on big datasources

- when a prometheus datasource has more than 10000 metrics, label lookup
for the query field is disabled
- installations of that size have slow typehead lookup times and make
the editor sluggish

* Raise dynamic lookup threshold to 10000 metrics

* Run start tasks again

- since the API update, the URL fallback was working, but the response
format also needed adapting: `data` (v1) vs `values` (pre-v1)
- this change looks for either data or values in the response for test
and metadata requests

* introduce checkbox theme variables

* Add checkbox component

* Style tweaks

* Namespace form styles returned from getFormStyles

* wip

* Radio button ui

* Add simple docs for RadioButtonGroup

* Merge fix

* Move radio button variables from theme to component style getter

DisplayProcessor: Interpret empty strings as NaN instead of 0 to support empty value map texts in Singlestat (#20952)