This change adds an internal alias for port to dport. This is done to
allow legacy config to operate as expected should a user have overrides
with the puppet legacy option. Should the action plugin encounter a
rule with the deprecated option a notice will be printed on screen
containing the rule and and information on how to convert it so that
functionality isn't lost on a future release.
Signed-off-by: Kevin Carter <firstname.lastname@example.org>