Add support for puppetlabs-mysql 2.2

Puppetlabs-mysql has been rewritten to be much
cleaner. This patch adds a new parameter for the
cinder mysql class allowing users to use the new
version. Previous behavior will continue as normal
when using the old version (0.9)

Change-Id: Ie0011102d9f4dfcd50f24afcb73072090c914011
Merge "Add support for puppetlabs-mysql 2.2"