Revert "Moves the redfin FCM back down to level 5."

Revert submission 14143327-redbull-fcm-level5-fix

Reason for revert: Build break, b/185169721
Reverted Changes:
Ie25de43fe:Moves the redfin FCM back down to level 5.
I83d3fcf54:Moves the redbull FCM back down to level 5.
Ib898e3c3f:Sets PRODUCT_VENDOR_FREEZE_SYSTEM_BUILD to true.

Bug: 185169721
Change-Id: Ide48fa70fec55d3c97f8f37f4cc67563f5e8d312