Elasticsearch version: 5.x branch

Details at https://elasticsearch-ci.elastic.co/job/elastic+elasticsearch+5.x+multijob-unix-compatibility/os=fedora/214/consoleFull

Two exceptions are popping up here (compared to my local run, where dont get any exception in the logs), one is a ClassCastException for trying to cast LocalTransportAddress to InetSocketTransportAddress (as the test does not mock zenpings), but also there is a NoSuchFileException for an index, when cleaning up.

@jpountz or @bleskes can you take a look maybe?