(MODULES-213) Solaris 10 support

> Added Solaris section to params.pp. In Solaris there are two packages
> to install to support ntp, SUNWntpr and SUNWntpu. (Root and User
> packages.)
> Adding two files to the $package_name array caused the install class
> to fail so install.pp was updated so that the $package_name was the
> resource title instead of the name attribute.
> 
> This change assumes that the packages are already installed for Solaris. If they
> are not then this will fail.
> 
> This was tested on Solaris 10 update 10 and on SLES 11 SP3 to ensure that it still works for Linux.

Updates and closes #171