[fonts] Update to use CIPD prebuilt

This is the start of a soft transition to use the CIPD prebuilt. Once
the change to the ensure file and the noop update script make it to GI,
another change to integration manifest will remove the Jiri hook. After
that, the upload.sh and update.sh scripts will be removed.

Test: Builds locally, CQ
Change-Id: Ib2d761cb4578d0baf673364d8a46df77d2e008d2
12 files changed