Fix provider loading issue in other modules.

The module works stand alone, but when included in other modules for spec
testing it causes a dubious load error:

    Failure/Error: should include_class 'git'
   Puppet::Error:
      Could not autoload puppet/type/file_line: Could not autoload 
puppet/provider/file_line/ssh: no such file to load -- 
puppet_x/puppetlabs/transport

This should resolve the load issue in spec testing with no impact to 
functionality.