Revert "Do not force SSL on Rubygems source"
Revert "Do not force SSL on Rubygems source"

https://github.com/rubygems/rubygems/issues/319 was fixed, so this
shouldn't affect people anymore.

This reverts commit f906afdb54ef79cab066ff74b00eec167b9b11eb.

hugocorbucci/konacha,uken/konacha,hugocorbucci/konacha,hugocorbucci/konacha,jfirebaugh/konacha,jfirebaugh/konacha,uken/konacha,uken/konacha,jfirebaugh/konacha