Move the package installation to before the forced service restart.

There were 2 service[mysql] blocks, renamed one to 'mysql-start' to remove
contention. There were also a pair of if/end blocks followed by unless/end that
were redundant, switched these to if/else statements.
added trivial client test while debugging an issue with server tests
passwords aren't escaped properly, use simpler password since this is a test
COOK-3752 merge
data_dir tests are failing with Ubuntu https://tickets.opscode.com/browse/COOK-3780
v3.0.12