(maint) Use Ruby 1.9 for Solaris acceptance tests

Prior to this commit, pre_suite for Solaris templates would install Ruby
1.8. This commit installs Ruby 1.9.3 on our Solaris 10 and 11 templates
as part of the Ruby 1.8.7 deprecation in Puppet 4.0.
Merge pull request #3317 from rji/maint/master/solaris-use-ruby19

(maint) Use Ruby 1.9 for Solaris acceptance tests