Switch to IP instead of localhost in attempt to fix Travis failures.
Switch to IP instead of localhost in attempt to fix Travis failures.

boyang-li/oboe-ruby,appneta/ruby-traceview,tlunter/oboe-ruby,boyang-li/oboe-ruby,tlunter/oboe-ruby,appneta/ruby-traceview,appneta/ruby-traceview,appneta/ruby-traceview,tlunter/oboe-ruby,tlunter/oboe-ruby,boyang-li/oboe-ruby,boyang-li/oboe-ruby