deps: upgrade openssl sources to 1.0.1u

This just replaces all sources of openssl-1.0.1u.tar.gz
into deps/openssl/openssl.

PR-URL: https://github.com/nodejs/node/pull/8718


Reviewed-By: Fedor Indutny <fedor@indutny.com>
Reviewed-By: Myles Borins <mborins@us.ibm.com>