excluded specs imported from ptomulik-vash project

About 3000 specs are currently excluded, because their number was
killing for travis-ci.org. To load/run these test currently one has to
set one of the following environment variables:

- PUPPET_TEST_VASH, or
- PUPPET_TEST_ALL

for example:

        PUPPET_TEST_VASH=1 bundle exec rspec spec/unit/util/vash