Auth: Add access token to in-proc communication and ServiceIdentity (#98926)

Use fake access token for in-proc grpc and add ServiceIdentity 
---------

Co-authored-by: gamab <gabriel.mabille@grafana.com>
Co-authored-by: Karl Persson <23356117+kalleep@users.noreply.github.com>

pkg/services/stats/statsimpl/stats.go

@@ -6,7 +6,6 @@ import (
 	"strconv"
 	"time"
 
-	claims "github.com/grafana/authlib/types"
 	"github.com/grafana/grafana/pkg/apimachinery/identity"
 	"github.com/grafana/grafana/pkg/infra/db"
 	"github.com/grafana/grafana/pkg/services/dashboards"
@@ -45,7 +44,7 @@ type sqlStatsService struct {
 func (ss *sqlStatsService) getDashboardCount(ctx context.Context, orgs []*org.OrgDTO) (int64, error) {
 	count := int64(0)
 	for _, org := range orgs {
-		ctx = identity.WithRequester(ctx, getStatsRequester(org.ID))
+		ctx, _ = identity.WithServiceIdentitiy(ctx, org.ID)
 		dashsCount, err := ss.dashSvc.CountDashboardsInOrg(ctx, org.ID)
 		if err != nil {
 			return 0, err
@@ -59,7 +58,7 @@ func (ss *sqlStatsService) getDashboardCount(ctx context.Context, orgs []*org.Or
 func (ss *sqlStatsService) getTagCount(ctx context.Context, orgs []*org.OrgDTO) (int64, error) {
 	total := 0
 	for _, org := range orgs {
-		ctx = identity.WithRequester(ctx, getStatsRequester(org.ID))
+		ctx, _ = identity.WithServiceIdentitiy(ctx, org.ID)
 		tags, err := ss.dashSvc.GetDashboardTags(ctx, &dashboards.GetDashboardTagsQuery{
 			OrgID: org.ID,
 		})
@@ -75,11 +74,10 @@ func (ss *sqlStatsService) getTagCount(ctx context.Context, orgs []*org.OrgDTO)
 func (ss *sqlStatsService) getFolderCount(ctx context.Context, orgs []*org.OrgDTO) (int64, error) {
 	total := 0
 	for _, org := range orgs {
-		backgroundUser := getStatsRequester(org.ID)
-		ctx = identity.WithRequester(ctx, backgroundUser)
+		ctx, ident := identity.WithServiceIdentitiy(ctx, org.ID)
 		folders, err := ss.folderSvc.GetFolders(ctx, folder.GetFoldersQuery{
 			OrgID:        org.ID,
-			SignedInUser: backgroundUser,
+			SignedInUser: ident,
 		})
 		if err != nil {
 			return 0, err
@@ -438,18 +436,3 @@ func addToStats(base stats.UserStats, role org.RoleType, count int64) stats.User
 
 	return base
 }
-
-func getStatsRequester(orgId int64) *identity.StaticRequester {
-	return &identity.StaticRequester{
-		Type:   claims.TypeServiceAccount,
-		UserID: 1,
-		OrgID:  orgId,
-		Name:   "stats-requester",
-		Login:  "stats-requester",
-		Permissions: map[int64]map[string][]string{
-			orgId: {
-				"*": {"*"},
-			},
-		},
-	}
-}