ACCUMULO-4182 Override hostname for travis-ci
ACCUMULO-4182 Override hostname for travis-ci

Attempt to work around a buffer overflow issue on travis-ci using
openjdk with long hostnames (https://docs.travis-ci.com/user/hostname)

milleruntime/accumulo,keith-turner/accumulo,ivakegg/accumulo,dhutchis/accumulo,apache/accumulo,ctubbsii/accumulo,keith-turner/accumulo,apache/accumulo,adamjshook/accumulo,mjwall/accumulo,ctubbsii/accumulo,apache/accumulo,dhutchis/accumulo,apache/accumulo,keith-turner/accumulo,milleruntime/accumulo,ctubbsii/accumulo,keith-turner/accumulo,lstav/accumulo,mikewalch/accumulo,mjwall/accumulo,phrocker/accumulo-1,phrocker/accumulo-1,dhutchis/accumulo,ivakegg/accumulo,mikewalch/accumulo,milleruntime/accumulo,keith-turner/accumulo,phrocker/accumulo-1,ivakegg/accumulo,dhutchis/accumulo,mikewalch/accumulo,ctubbsii/accumulo,phrocker/accumulo-1,lstav/accumulo,lstav/accumulo,adamjshook/accumulo,mikewalch/accumulo,lstav/accumulo,dhutchis/accumulo,lstav/accumulo,dhutchis/accumulo,ctubbsii/accumulo,ctubbsii/accumulo,mjwall/accumulo,phrocker/accumulo-1,adamjshook/accumulo,apache/accumulo,milleruntime/accumulo,milleruntime/accumulo,milleruntime/accumulo,mjwall/accumulo,ivakegg/accumulo,dhutchis/accumulo,mjwall/accumulo,adamjshook/accumulo,adamjshook/accumulo,lstav/accumulo,adamjshook/accumulo,ivakegg/accumulo,mikewalch/accumulo,adamjshook/accumulo,milleruntime/accumulo,mjwall/accumulo,mikewalch/accumulo,mikewalch/accumulo,adamjshook/accumulo,apache/accumulo,keith-turner/accumulo,ivakegg/accumulo,dhutchis/accumulo,dhutchis/accumulo,phrocker/accumulo-1,ctubbsii/accumulo,keith-turner/accumulo,ivakegg/accumulo,mjwall/accumulo,phrocker/accumulo-1,apache/accumulo,adamjshook/accumulo,mikewalch/accumulo,lstav/accumulo