TST: yahoo options tests additional skipping criteria
https://travis-ci.org/pydata/pandas/jobs/40415856
https://travis-ci.org/pydata/pandas/jobs/40425986
cc @dstephens99

These are hitting a `ValueError` on multiple-pr's I have seen. Maybe they are getting partial data?
So need to skip on that particular error (not exactly sure where that is coming from).
