Re-add Apache License v2
Re-add Apache License v2

git-svn-id: https://svn.apache.org/repos/asf/jmeter/trunk@1484155 13f79535-47bb-0310-9956-ffa450edef68

Former-commit-id: 381fc3cfeb5cf7932a7977a68f49bf824cd4f4aa
benbenw/jmeter,etnetera/jmeter,ham1/jmeter,benbenw/jmeter,ham1/jmeter,apache/jmeter,ham1/jmeter,benbenw/jmeter,etnetera/jmeter,ham1/jmeter,ham1/jmeter,etnetera/jmeter,apache/jmeter,etnetera/jmeter,apache/jmeter,etnetera/jmeter,apache/jmeter,benbenw/jmeter,apache/jmeter