Enable partial clone with blob size filter by default
Problem to solve
Once it is possible to enable blob and sparsity filters independently, we should enable blob filters by default since they are low risk and make it easy for customers to try out partial clone.
Currently we have one feature flag
gitaly_upload_pack_filter to control both blob and sparsity filters.
- reuse the existing feature flag
gitaly_upload_pack_filterfor blob filters, and default to enabled
- create a new feature flag
gitaly_upload_pack_filter_sparsityfor sparsity filters, and default to false