Add missing uploadstash.us_props for PostgreSQL

This field was introduced in e5d41cca909a8ec1b19c6c080388c885854be3f7
but only for MySQL.

Change-Id: I057b1dd845a5ab7ae05f5597454981a6e2c12698
(cherry picked from commit c7f4586fe1e405e5ad8e4e504b024248a36eef57)