feat(ordering): optionally append includefiles to main config

pillar.example

@@ -63,3 +63,9 @@ sudoers:
       netgroups:
         other_netgroup:
           - 'ALL=(ALL) ALL'
+  # ordering is important. The sudoers manpage says when multiple
+  # entries match, the last match is used. However, if we do not
+  # manage the main config, our included files may not match last.
+  # To guarantee included files match last, set 'true' below to append
+  # each '#include <includefile>' to sudoers file.
+  append_included_files_to_endof_main_config: true