Update sonar config

Get rid of deprecated sonar settings, exclude sub-module that
doesn't have code, and ensure there is a single jacoco-ut.exec
file created.

Issue-ID: POLICY-2321
Change-Id: I05d1c0e4d599aff7c6ad0fec39ff1220cdb9a72d
Signed-off-by: Pamela Dragosh <pdragosh@research.att.com>
diff --git a/testsuites/pom.xml b/testsuites/pom.xml
index 33dccf3..2a729df 100644
--- a/testsuites/pom.xml
+++ b/testsuites/pom.xml
@@ -3,7 +3,7 @@
   testsuites
   ================================================================================
   Copyright (C) 2018 Ericsson. All rights reserved.
-  Modifications Copyright (C) 2018 AT&T. All rights reserved.
+  Modifications Copyright (C) 2018, 2020 AT&T. All rights reserved.
   ================================================================================
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
@@ -27,6 +27,12 @@
     </parent>
     <artifactId>testsuites</artifactId>
     <packaging>pom</packaging>
+
+    <properties>
+        <!-- There is no code in this sub-module, only holds interfaces. So skip sonar. -->
+        <sonar.skip>true</sonar.skip>
+    </properties>
+
     <modules>
         <module>stability</module>
         <module>performance</module>