Hornor scm:checkout scm:export's excludes/includes configuration

Current, scm:checkout and scm:export allows excludes/includes configuration. However these params are ignored.

We should perform the filter (remove necessary files ) after scm action complete.

The question here: should it be done at plugin level or api level.

This use case is a good feature to have, rather having the user to use antrun to do the post filter