Elasticsearch: Add tracing to data source (#74750)

* Elasticsearch: Add tracing do data source

* Fix tests

* Address feedback

* Update pkg/tsdb/elasticsearch/response_parser.go

Co-authored-by: Sven Grossmann <sven.grossmann@grafana.com>

* Update pkg/tsdb/elasticsearch/response_parser.go

Co-authored-by: Sven Grossmann <sven.grossmann@grafana.com>

* Track error across both spans

* Add span for decoding of response

* Fix test

* Update setting of errors + fix test

---------

Co-authored-by: Sven Grossmann <sven.grossmann@grafana.com>

pkg/tsdb/elasticsearch/client/client_test.go

@@ -15,6 +15,7 @@ import (
 
 	"github.com/grafana/grafana/pkg/components/simplejson"
 	"github.com/grafana/grafana/pkg/infra/log"
+	"github.com/grafana/grafana/pkg/infra/tracing"
 )
 
 func TestClient_ExecuteMultisearch(t *testing.T) {
@@ -67,7 +68,7 @@ func TestClient_ExecuteMultisearch(t *testing.T) {
 			To:   to,
 		}
 
-		c, err := NewClient(context.Background(), &ds, timeRange, log.New("test", "test"))
+		c, err := NewClient(context.Background(), &ds, timeRange, log.New("test", "test"), tracing.NewFakeTracer())
 		require.NoError(t, err)
 		require.NotNil(t, c)
 
@@ -189,7 +190,7 @@ func TestClient_Index(t *testing.T) {
 				To:   to,
 			}
 
-			c, err := NewClient(context.Background(), &ds, timeRange, log.New("test", "test"))
+			c, err := NewClient(context.Background(), &ds, timeRange, log.New("test", "test"), tracing.NewFakeTracer())
 			require.NoError(t, err)
 			require.NotNil(t, c)