[CPP] PubManTest: move logger into test fixture
[CPP] PubManTest: move logger into test fixture

Change-Id: I563a2bf82da48de3d5bee6e60e63eafa4840c7a5

bmwcarit/joynr,clive-jevons/joynr,clive-jevons/joynr,bmwcarit/joynr,bmwcarit/joynr,clive-jevons/joynr,bmwcarit/joynr,bmwcarit/joynr,bmwcarit/joynr,bmwcarit/joynr,bmwcarit/joynr,clive-jevons/joynr,clive-jevons/joynr,bmwcarit/joynr,clive-jevons/joynr