Make default list of CA's blank on JRuby
Make default list of CA's blank on JRuby

References jruby/jruby#155.

teodor-pripoae/bunny,0xfaded/bunny,wconrad/bunny,wconrad/bunny,bartj3/bunny,0xfaded/bunny,gferguson-gd/bunny,pressrelations/bunny,pressrelations/bunny,gferguson-gd/bunny,jafrog/bunny,teodor-pripoae/bunny,bartj3/bunny,jafrog/bunny