crypto: add deprecated ValiCert CA for cross cert

crypto: add deprecated ValiCert CA for cross cert

The host of melissadata.net has a cross root certification between
Starfield Class 2 and ValiCert Class 2. OpenSSL-1.0.1 only looks up
a cert chain to the deprecated ValiCert Class 2 CA and causes
untrusted error. We add it for a short-term remedy and it is to be
removed after upgrading OpenSSSL-1.0.2 and applying private patches
to support alternative cert chains.
See #402 and #589.

Fixes: https://github.com/iojs/io.js/issues/923
PR-URL: https://github.com/iojs/io.js/pull/1135
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>