CloudMonitoring: Migrate to use backend plugin SDK contracts (#38650)

* Use SDK contracts for cloudmonitoring

* Get build running, tests passing and do some refactoring (#38754)

* fix build+tests and refactor

* remove alerting stuff

* remove unused field

* fix plugin fetch

* end to end

* resp rename

* tidy annotations

* reformatting

* update refID

* reformat imports

* fix styling

* clean up unmarshalling

* uncomment + fix tests

* appease linter

* remove spaces

* remove old cruft

* add check for empty queries

* update tests

* remove pm as dep

* adjust proxy route contract

* fix service loading

* use UNIX val

* fix endpoint + resp

* h@ckz for frontend

* fix resp

* fix interval

* always set custom meta

* remove unused param

* fix labels fetch

* fix linter

* fix test + remove unused field

* apply pr feedback

* fix grafana-auto intervals

* fix tests

* resolve conflicts

* fix bad merge

* fix conflicts

* remove bad logger import

Co-authored-by: Will Browne <wbrowne@users.noreply.github.com>
Co-authored-by: Will Browne <will.browne@grafana.com>

pkg/api/pluginproxy/token_provider_gce.go

@@ -2,25 +2,25 @@ package pluginproxy
 
 import (
 	"context"
+	"time"
 
-	"github.com/grafana/grafana/pkg/models"
 	"github.com/grafana/grafana/pkg/plugins"
 	"golang.org/x/oauth2/google"
 )
 
 type gceAccessTokenProvider struct {
 	datasourceId      int64
-	datasourceVersion int
+	datasourceUpdated time.Time
 	ctx               context.Context
 	route             *plugins.AppPluginRoute
 	authParams        *plugins.JwtTokenAuth
 }
 
-func newGceAccessTokenProvider(ctx context.Context, ds *models.DataSource, pluginRoute *plugins.AppPluginRoute,
+func newGceAccessTokenProvider(ctx context.Context, ds DSInfo, pluginRoute *plugins.AppPluginRoute,
 	authParams *plugins.JwtTokenAuth) *gceAccessTokenProvider {
 	return &gceAccessTokenProvider{
-		datasourceId:      ds.Id,
-		datasourceVersion: ds.Version,
+		datasourceId:      ds.ID,
+		datasourceUpdated: ds.Updated,
 		ctx:               ctx,
 		route:             pluginRoute,
 		authParams:        authParams,