Pungi creates "latest" symlink for composes.
This is sometimes not desired, for example for test composes.
We should think about following:

• remove symlinking from Pungi (create symlink in a wrapper that runs Pungi, possibly make a script that creates the symlink)
• turn symlinks off for test composes (sounds like a hack to me)
• make an option to turn symlinks on/off

I prefer the first option (I'd like to keep Pungi simple).