RNA-seq Strand Specificity Metric

Add strand specificity to the Picard RNA-seq metrics including a PP param for RNA-seq models.  This PR will require a backfill of RNA-seq processing profiles to a value of 'NONE' to match Picard's default value.  Also existing software results will require a new lookup hash.  Tagging @dufeiyu as we have already discussed this via email.
This PR has some of these `unless( execute() )`s in it as well.

If you like the brevity of not calling create, one alternative might be
```perl
my $cmd = Genome::Model::Tools::Picard::CollectRnaSeqMetrics->execute(%picard_params);
unless($cmd and $cmd->result) {
  $self->error_message('Failed to run Picard CollectRnaSeqMetrics for alignment result: %s', $alignment_result->id);
  return;
}
```