Instance Time zone

Loading the timezone tables in mysql db on instance creation to use named timezones.
(Currently UTC offsets are used)
This will enable users to tweak the instance's default timezone in
/etc/mysql/my.cnf or through configuration groups/params
and assign a named timezone.
Eg: default-time-zone = Europe/London

Note: This will require ops to load these tables on existing instances.
One more thing: can you make this a new method called "setup_timezones?" That will keep the prepare method from getting longer than it already is.