multi_blocks_test: simple test for a re-created file
multi_blocks_test: simple test for a re-created file

Not a regression for KBFS-700, but good to have around nonetheless.

Issue: KBFS-700

keybase/client,keybase/client,keybase/kbfs,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/kbfs,keybase/client,keybase/kbfs,keybase/kbfs,keybase/client