Update travis build to use ant 1.10.4
Update travis build to use ant 1.10.4

git-svn-id: https://svn.apache.org/repos/asf/jmeter/trunk@1834744 13f79535-47bb-0310-9956-ffa450edef68

Former-commit-id: 1b7fb36108ae39bf0399ba581bcd9b13e42df25d
ham1/jmeter,ham1/jmeter,apache/jmeter,ham1/jmeter,etnetera/jmeter,etnetera/jmeter,etnetera/jmeter,apache/jmeter,benbenw/jmeter,benbenw/jmeter,apache/jmeter,benbenw/jmeter,ham1/jmeter,apache/jmeter,etnetera/jmeter,etnetera/jmeter,apache/jmeter,ham1/jmeter,benbenw/jmeter