Exclude all our files from backup

Even though we don't allow backup at all, Android seems to go into the direction of overriding this. For now only for device-to-device backups, even though we could not verify this.
2 jobs for 1951-exclude-files-from-backup in 9 minutes and 5 seconds (queued for 7 minutes and 44 seconds)
Status Job ID Name Coverage
  Test
passed #8105
test

00:09:05

 
  Optional Tests
manual #8106
allowed to fail manual
manual_tests