[MM-32281] SqlRoleStore/GetByName: add context to allow read from master (#17176)

* role_store/GetByName: add context

* propagate context in the app layer

* propagate context in the app layer

* add missing import

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

app/import_functions.go

@@ -121,7 +121,7 @@ func (a *App) importRole(data *RoleImportData, dryRun bool, isSchemeRole bool) *
 		return nil
 	}
 
-	role, err := a.GetRoleByName(*data.Name)
+	role, err := a.GetRoleByName(context.Background(), *data.Name)
 	if err != nil {
 		role = new(model.Role)
 	}