test custom template substitutions work
simplify parameters by making less configurable
fail on support for major version 8 until templates are written and tested; test the major_version field in spec
test changing the instance_root_dir param works
update library.pp to remove reference to trigger file parameters
add support for managing a symlink to the main tomcat install, restart tomcat if it or java changes
validate both source and target for symlinks
tests for install symlinks
spec tests for trigger files/init.pp