Remove gemspec for default gems we are updating

When we are providing a newer version of a default gem than the one that Ruby ships with, in order to avoid warnings about multiple gem versions being available, we have to remove the gemspec for the older version. Generally, we don't need to ship our own version of a default gem unless it has a CVE and Ruby has not yet fixed it.

Author: nmburgan

configs/components/_base-rubygem.rb

@@ -46,4 +46,10 @@
            else
              "#{settings[:gem_install]} #{name}-#{version}.gem #{gem_install_options}"
            end
+  # If we are installing a newer version of a default gem, we need to remove the existing
+  # specification file so that we don't get warnings.
+  steps << "rm -f #{settings[:gem_home]}/specifications/default/#{name}-*.gemspec"
+  # This dir is usually empty and only there for compatilibity reasons for things requiring
+  # a directory corresponding to a gemspec. Remove it to avoid confusion.
+  steps << "rm -f #{settings[:gem_home]}/gems/#{name}-*[!#{version}]"
 end