Added Jacoco Code Coverage For Sonar.

build.gradle

 plugins {
     id 'java'
     id 'org.sonarqube' version '2.8'
+    id 'jacoco'
 }
 
 group 'com.example'
@@ -38,4 +39,15 @@ configurations.all {
 
 test {
     useJUnitPlatform()
+    finalizedBy jacocoTestReport
+}
+
+jacocoTestReport {
+    reports {
+        xml.enabled true
+        xml.destination file("${buildDir}/reports/jacoco/test/jacocoTestReport.xml")
+        html.enabled false
+        csv.enabled false
+    }
+    dependsOn test
 }
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