Update build scripts to work on Gradle 6.1

Removes the custom JaCoCo report aggregation code, which is now handled
automatically by Gradle.

gradle/code-quality.gradle

@@ -12,8 +12,13 @@ detekt {
     parallel = true
 }
 
+
 sonarqube {
     properties {
+        property "sonar.organization", "apollo-rsps"
+        property "sonar.projectKey", "apollo:org.apollo"
+        property "sonar.projectName", "Apollo RSPS"
+        property "sonar.kotlin.file.suffixes", ".kt,.kts"
         property "sonar.kotlin.detekt.reportPaths", detektAggregateReport
     }
-}
+}