Adding Junits for policy engine

Adding Junits to Policy Engine Utils project, removed duplicates, fixed
few defects along the way and fixes to projects.

Issue-Id: POLICY-52
Change-Id: Ia0598300f9bd60f5372b9ef7d8984657478a1611
Signed-off-by: Tej, Tarun <tt3868@att.com>
diff --git a/ONAP-PDP-REST/xacml.pdp.properties b/ONAP-PDP-REST/xacml.pdp.properties
index b88c935..6cf2e94 100644
--- a/ONAP-PDP-REST/xacml.pdp.properties
+++ b/ONAP-PDP-REST/xacml.pdp.properties
@@ -118,6 +118,10 @@
 
 # Delay for Notifications Don't change this. Value in milliSec.  
 xacml.rest.notification.delay=30
+
+# Client interval to ping notification service. 
+CLIENT_INTERVAL=15000
+
 # Buffer Size. 
 REQUEST_BUFFER_SIZE=15