CI: Move some build settings (#64491)
* Move some build settings to Vault
* CI: Remove reference to DOWNSTREAM_REPO as it isn't used
(cherry picked from commit 4b241804b4)
CI: Move some build settings (#64491)
* Move some build settings to Vault
* CI: Remove reference to DOWNSTREAM_REPO as it isn't used
(cherry picked from commit 4b241804b4)