findmissing: Update to MySQL 8.0

MySQL 8.0 supports more operations than MySql 5.7, so let's update to it.
To do this, we had to create a new database and copy the contents of the
old database to it. Here we just need to update the pointers to the new
database.

BUG=None
TEST=Run helper command

Change-Id: Ifa183b273c3a12afe07767999c20d91f47802701
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/2628706
Reviewed-by: Curtis Malainey <[email protected]>
Commit-Queue: Guenter Roeck <[email protected]>
Tested-by: Guenter Roeck <[email protected]>
2 files changed