Remove Modulefile from puppet-module spec

In their infinite wisdom and knack for planning, Puppet has
decided that the Modulefile is now deprecated and everyone
should be writing metdata.json by hand. Yay....

We don't need to have these in our modules any more. I will
submit patches to the ones that have them that rip them out
and replace we metadata.json

For anyone worried about it, I wrote a metadata.json linting
ruby gem we can run over our metadata.json to make sure we
don't screw it up.

Change-Id: I39c2e56b916db4158885ff0ae19fc751a37e26b6
Merge "Remove Modulefile from puppet-module spec"