Pull fix for OpenSSL with Perl 5.18+.

OpenSSL v1.0.1e doesn't build with Perl 5.18+ due to some POD errors
in the OpenSSL docs.  I submitted a pull request to fix the problem
(https://github.com/opscode/omnibus-software/pull/57) but it is not
yet merged.  Temporarily peg omnibus-software dependency to my fork
that includes the fix in order to build on latest Arch and other
distros with latest Perl.
Update dependencies.

Trivial updates to latest Omnibus, Rake and FPM releases.
Update to Vagrant v1.2.4.