Default module installation to ignore any dependencies

To prevent module version conflicts, instead of letting puppet module install resolve dependencies, I've modified this to always ignore these and simply install the module requested.

For example, trying to install a module that has a requirement `puppetlabs-postgresql >= 3.4.0` will auto install the latest verison,`v4.0.0`, this is not desirable, especially if other modules have requirements like `puppetlabs-postgresql < 4.0.0` !

This modification will hopefully fix that behaviour.

For CEH purposes it will mean we have to explicitly define every module required, including dependencies.  But that is no big deal.