Trace UI demo (#20297)

* Add integration with Jeager
Add Jaeger datasource and modify derived fields in loki to allow for opening a trace in Jager in separate split.
Modifies build so that this branch docker images are pushed to docker hub
Add a traceui dir with docker-compose and provision files for demoing.:wq

* Enable docker logger plugin to send logs to loki

* Add placeholder zipkin datasource

* Fixed rebase issues, added enhanceDataFrame to non-legacy code path

* Trace selector for jaeger query field

* Fix logs default mode for Loki

* Fix loading jaeger query field services on split

* Updated grafana image in traceui/compose file

* Fix prettier error

* Hide behind feature flag, clean up unused code.

* Fix tests

* Fix tests

* Cleanup code and review feedback

* Remove traceui directory

* Remove circle build changes

* Fix feature toggles object

* Fix merge issues

* Fix some null errors

* Fix test after strict null changes

* Review feedback fixes

* Fix toggle name

Co-authored-by: David Kaltschmidt <david.kaltschmidt@gmail.com>

public/app/plugins/datasource/loki/datasource.ts

@@ -51,6 +51,7 @@ import {
 } from './types';
 import { LegacyTarget, LiveStreams } from './live_streams';
 import LanguageProvider from './language_provider';
+import { serializeParams } from '../../../core/utils/fetch';
 
 export type RangeQueryOptions = Pick<DataQueryRequest<LokiQuery>, 'range' | 'intervalMs' | 'maxDataPoints' | 'reverse'>;
 export const DEFAULT_MAX_LINES = 1000;
@@ -68,12 +69,6 @@ const DEFAULT_QUERY_PARAMS: Partial<LokiLegacyQueryRequest> = {
   query: '',
 };
 
-function serializeParams(data: Record<string, any>) {
-  return Object.keys(data)
-    .map(k => `${encodeURIComponent(k)}=${encodeURIComponent(data[k])}`)
-    .join('&');
-}
-
 interface LokiContextQueryOptions {
   direction?: 'BACKWARD' | 'FORWARD';
   limit?: number;