Fix listing and getting dashboard versions across different API versions (#109860)

* Fix listing and getting dashboard versions across different API versions

What

This commit updates dashboard version service to use API version aware
API client. The service now also supports parsing different API version
representation of dashboards.

The API version aware client is also updated to support listing across
versions.

Why

Currently listing or getting specific versions is broken for all v2
versions of the dashboard API, especially if the dashboard being checked
is still saved using v1 APIs.

Signed-off-by: Igor Suleymanov <igor.suleymanov@grafana.com>

* Remove superfluous tracing spans

Signed-off-by: Igor Suleymanov <igor.suleymanov@grafana.com>

---------

Signed-off-by: Igor Suleymanov <igor.suleymanov@grafana.com>

pkg/api/folder_bench_test.go

@@ -37,6 +37,7 @@ import (
 	"github.com/grafana/grafana/pkg/services/dashboards"
 	"github.com/grafana/grafana/pkg/services/dashboards/database"
 	dashboardservice "github.com/grafana/grafana/pkg/services/dashboards/service"
+	dashclient "github.com/grafana/grafana/pkg/services/dashboards/service/client"
 	"github.com/grafana/grafana/pkg/services/featuremgmt"
 	"github.com/grafana/grafana/pkg/services/folder/folderimpl"
 	"github.com/grafana/grafana/pkg/services/licensing/licensingtest"
@@ -446,11 +447,32 @@ func setupServer(b testing.TB, sc benchScenario, features featuremgmt.FeatureTog
 		cfg, features, routing.NewRouteRegister(), sc.db, ac, license, folderServiceWithFlagOn, acSvc, sc.teamSvc, sc.userSvc, actionSets)
 	require.NoError(b, err)
 	dashboardSvc, err := dashboardservice.ProvideDashboardServiceImpl(
-		sc.cfg, dashStore, folderStore,
-		features, folderPermissions, ac, actest.FakeService{},
-		folderServiceWithFlagOn, nil, client.MockTestRestConfig{}, nil, quotaSrv, nil, nil, nil, dualwrite.ProvideTestService(), sort.ProvideService(),
+		sc.cfg,
+		dashStore,
+		folderStore,
+		features,
+		folderPermissions,
+		ac,
+		actest.FakeService{},
+		folderServiceWithFlagOn,
+		nil,
+		quotaSrv,
+		nil,
+		nil,
+		dualwrite.ProvideTestService(),
 		serverlock.ProvideService(sc.db, tracing.InitializeTracerForTest()),
 		kvstore.NewFakeKVStore(),
+		dashclient.NewK8sClientWithFallback(
+			sc.cfg,
+			client.MockTestRestConfig{},
+			dashStore,
+			sc.userSvc,
+			nil,
+			sort.ProvideService(),
+			dualwrite.ProvideTestService(),
+			nil,
+			features,
+		),
 	)
 	require.NoError(b, err)