See script directory for method. The script to run in the top level
MaxScale directory is called maxscale-uncrustify.sh, which uses
another script, list-src, from the same directory (so you need to set
your PATH). The uncrustify version was 0.66.
Only commands that can contain an SQL statements should be stored for
retrying (COM_QUERY and COM_EXECUTE). Other commands are either session
commands or do not work with query retrying.
