Re-evaluate Ruby gems bundled in RPM packages

[Metallion]

Problem

After doing a minimal install with just hva-openvz, dcmgr (which install collector too atm) and webui, more than 300MB is used in the /opt/axsh/wakame-vdc directory.

Most of this space is taken by ruby gems. A quick ls command showed that they include trema and rspec. Neither of these are needed for the minimal install.

Solution

We should review which packages need which gems and split them up accordingly.