Ensure mysql is started before running prepare logic

Some datastores (percona mysql 5.6) don't start after install. This
is likely related to the StdOutOnly usage as the service starts on
a plain apt-get install. This extra call will ensure that the mysql
service is started with the init script before running through the
prepare logic.
Merge pull request #70 from kevinconway/start_all_the_time

Ensure mysql is started before running prepare logic