By Akinwale Kasali Robert Sylvester Kelly, popularly known as R.Kelly is presently facing integrity test, as thousands of people in Germany has petitioned the Rand B star, insisting that his concert in the Western European country be stopped with immediate effect. Thousands of people in Germany have signed a change.org online petition calling for two concerts by controversial US singer R Kelly not to go ahead. On Friday, almost 22,000 people had signed the online petition, the motto of which is “Don’t give sexual offenders a stage.’’ The petition calls…