Remove basic spec

This removes the "basic_spec" as it is largely a sanity check against
the env/tooling.  The spec itself is problematic because in Puppet
Enterprise a module will be in 'sitemoduledir' or 'distmoduledir'
depending on whether it's included in PE as part of the distribution or
not.  However it will always be in 'distmoduledir' for FOSS.

I went this way because I had already done it in puppetlabs/puppetlabs-java_ks#39, but thinking about it, maybe you'd prefer to do a `puppet  module list`?