Vcf symlink

This is a pretty junky script for Operations and/or data-transfer to symlink a bunch of build's SNV and Indel files. It is unclear to me how to test this so the test case is just a use of the module.
Instead of `not $_->model->name =~ /\Q$exclude\E/` I think it is more common to do `$_->model->name !~ /\Q$exclude\E/`.