Use the service_name attribute for the service name so we can use percona on 2013Q3 or newer and percona-server on 2013Q2 or earlier

Signed-off-by: Jacques Marneweck <jacques@powertrip.co.za>
Move a few things around. Only install percona toolkit on 2013Q1 and 2013Q2 seeing it's not in 2013Q3 at present, run mysql_instal_db to create the initial databases

Signed-off-by: Jacques Marneweck <jacques@powertrip.co.za>