Move definition of sonar namespace to sonar task, so that it works, even when sonar lib was just downloaded.
Move definition of sonar namespace to sonar task, so that it works,
even when sonar lib was just downloaded.

Bugzilla Id: 60494


git-svn-id: https://svn.apache.org/repos/asf/jmeter/trunk@1774880 13f79535-47bb-0310-9956-ffa450edef68

Former-commit-id: 88799dfa447b9274c83c382a059f3f8592168261
benbenw/jmeter,etnetera/jmeter,apache/jmeter,apache/jmeter,ham1/jmeter,benbenw/jmeter,apache/jmeter,ham1/jmeter,benbenw/jmeter,apache/jmeter,etnetera/jmeter,apache/jmeter,etnetera/jmeter,etnetera/jmeter,ham1/jmeter,ham1/jmeter,etnetera/jmeter,benbenw/jmeter,ham1/jmeter