Uses new httpclient package from grafana-plugin-sdk-go introduced
via grafana/grafana-plugin-sdk-go#328.
Replaces the GetHTTPClient, GetTransport, GetTLSConfig methods defined
on DataSource model.
Longer-term the goal is to migrate core HTTP backend data sources to use the
SDK contracts and using httpclient.Provider for creating HTTP clients and such.
Co-authored-by: Arve Knudsen <arve.knudsen@gmail.com>
* Return dataframe directly from the backend
* Streamline some transforms
* Fix lint issues
* Remove unused lib
* Fix datasource test
* Fix imports and add some typings
* Fix the typings and some tests
* Add private doc comment
* Remove private tag
* Add comments
* Fix some API docs issues
* Tempo: Support opentelemetry response
* Tempo: convert Tempo to backend data source
* Update data source test
* Fix lint issues
* Apply suggestions from code review
Co-authored-by: Arve Knudsen <arve.knudsen@gmail.com>
* Return error when trace not found
Co-authored-by: Arve Knudsen <arve.knudsen@gmail.com>