Required to support updation from 8 to 10

Bug, upstream: https://gitlab.com/gitlab-org/gitlab-ce/issues/48040

--- a/lib/gitlab/gitaly_client.rb
+++ b/lib/gitlab/gitaly_client.rb
@@ -226,6 +226,12 @@
       # Disabled features are always off!
       return false if status == MigrationStatus::DISABLED
 
+      # If the features table does not exist, don't check the feature, just return
+      # the default
+      unless Gitlab::Database.cached_table_exists?(Feature::FlipperFeature.table_name)
+        return false
+      end
+
       feature = Feature.get("gitaly_#{feature_name}")
 
       # If the feature has been set, always evaluate