Added branch to sonar properties

app/build.gradle

@@ -25,6 +25,7 @@ sonarqube {
         property 'sonar.login', '#{sonar.login}'
         property 'sonar.organization', '#{sonar.organization}'
         property 'sonar.projectKey', '#{sonar.projectkey}'
+        property 'sonar.branch', 'master'
     }
 }