Yast is for installing pre-packaged (open source) linux software for Suse...just like Rpm packages for RedHat linux packages. As far as I know, nobody packages cpan modules into specific linux packages. cpan modules have all the code for a perl module to be built and installed on a target machine, but you may have to take care of any pre-requisites for the module. check on the cpan page for the module to see if it has any dependencies.
by the way your cpan build went ok, it looks like some minor issues with getting at the documentation (POD) during test stage. so you could force the install.