[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>

store/retrylayer/retrylayer.go

@@ -7110,11 +7110,11 @@ func (s *RetryLayerRoleStore) GetAll() ([]*model.Role, error) {
 
 }
 
-func (s *RetryLayerRoleStore) GetByName(name string) (*model.Role, error) {
+func (s *RetryLayerRoleStore) GetByName(ctx context.Context, name string) (*model.Role, error) {
 
 	tries := 0
 	for {
-		result, err := s.RoleStore.GetByName(name)
+		result, err := s.RoleStore.GetByName(ctx, name)
 		if err == nil {
 			return result, nil
 		}