handle mysql compiled without ssl

mysql doesn't allow ssl=true/false in my.cnf if it hasn't been compiled
with ssl, therefor add a new parameter ssl-disable which makes sure the
template doesn't write anything with ssl to the config.
backup script test: Actually loop through a list

we do this by creating more than one database to backup.
add message to warn if disabling ssl
add test for ssl-disable
Merge pull request #477 from Mayflower/master

handle mysql compiled without ssl
fix mysql not starting if ssl is not disabled
Merge pull request #488 from Mayflower/master

fix #487 mysql not starting if ssl is not disabled
Merge pull request #479 from igalic/better-backup-test

backup script test: Actually loop through a list