Fixed the Rakefile not parsing because of a rogue end.
Upgraded to the latest version: 3.3.1
Removed agent tarball.

We no longer need to download the agent tarball since the master comes
with it packaged now.
Without an agent we no longer need an array.
Optionally set the version printed in the filename
We no longer need the agent tarball.
Use the same OSS versions as PE.
Update the packages in the ks.

Added rubygems-json and ruby-devel.
Update to 3.3.2.
Package names are dumb.
Get rid of the yum clean all command.

I've removed this so that the skip_if_unvailable option for the yum repos will work.
Test yum clean packages instead of yum clean all.
Merge pull request #339 from klynton/fix-the-rakefile

Fix the rakefile