ruby cart: Explicitly req. ruby-rdoc dep for rhel

Bug 1066246
https://bugzilla.redhat.com/show_bug.cgi?id=1066246

Although `ruby-rdoc` gets pulled in by `rubygems`, it's commonly needed
or desired for typical ruby usage and so should be required here as well.
Bug 1081441 - unprivileged_unidle not updating idler.txt
bump_minor_versions for sprint 43
Merge pull request #5097 from dobbymoodge/BZ1066246

Merged by openshift-bot
Merge pull request #5100 from jwhonce/bug/1081441

Merged by openshift-bot