Make Sneaky Pete load multiple datastores

This commit adds a new binary named "sneaky-pete" which loads
the flags and logging up just enough to figure out which
datastore_manager is being used and then run the appropriate
dedicated binary.
Use package given to Sneaky by Trove

This change introduces a list of possible packages for
MySQL which must be checked initially to see if MySQL is
installed or not. It also gets rid of the "mysql_package"
flag and instead uses the arguments passed by Trove.
Merge pull request #23 from TimSimpsonR/multiple-datastores

Make Sneaky Pete load multiple datastores