Switched to https

To avoid
E, [2014-04-13T04:29:37.020567 #48] ERROR -- /var/vcap/data/dea_next/admin_buildpacks/9e04393cbd36136eaf2271f6a6ce634fe198096d/lib/liberty_buildpack/buildpack.rb:46:in `rescue in drive_buildpack_with_logger': Detect failed with exception #<RuntimeError: IBM JRE error: Connection refused - connect(2)>
IBM JRE error: Connection refused - connect(2)
/var/vcap/packages/dea_next/buildpacks/lib/buildpack.rb:96:in `build_pack': Unable to detect a supported application type (RuntimeError)
        from /var/vcap/packages/dea_next/buildpacks/lib/buildpack.rb:73:in `block in compile_with_timeout'