Switch over to packaging.

This switch over drops bundler and Gemfiles in favor of having it all done
through native RPM packages.

The Gemfile and Rakefile have been removed. The packaging is now driven through
make as to not require ruby on the build system.

To build this package (which will include all gems needed to run the service)

Simply do:

make srpm

then build that srpm against a mock target.

Optinally you could just run `make rpm` if you already have all the build
requirements installed on your system.