db upgrade: remove some code dup

Instead of a switch() for each version number with identical switch cases
except for the function name, use an array of function pointers and loop.

Also print a success message after each individual version upgrade, instead of
only one in the end (see change in db_upgrade_test.ok).

Change-Id: I1736af3d9a3f02e29db836966ac15ce49f94737b
2 files changed