policy/drools-pdp jdk11 upgrades

Issue-ID: POLICY-1589
Change-Id: I0ed05c6e471a7da6658e02a4ba3115d3a117cedd
Signed-off-by: Hockla, Ali (ah999m) <ah999m@att.com>
diff --git a/api-state-management/pom.xml b/api-state-management/pom.xml
index 7ede769..cf54e4f 100644
--- a/api-state-management/pom.xml
+++ b/api-state-management/pom.xml
@@ -2,7 +2,7 @@
   ============LICENSE_START=======================================================
   ONAP Policy Engine - Drools PDP
   ================================================================================
-  Copyright (C) 2017, 2019 AT&T Intellectual Property. All rights reserved.
+  Copyright (C) 2017, 2019-2020 AT&T Intellectual Property. 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.
@@ -34,8 +34,6 @@
   <description>Separately loadable module for state management APIe</description>
 
   <properties>
-          <maven.compiler.source>1.8</maven.compiler.source>
-          <maven.compiler.target>1.8</maven.compiler.target>
           <swagger.version>1.5.0</swagger.version>
   </properties>
 
@@ -75,7 +73,7 @@
                                 with minor changes -->
                             <configLocation>onap-checkstyle/onap-java-style.xml</configLocation>
                             <!-- <sourceDirectory> is needed so that checkstyle ignores the generated sources directory -->
-                            <sourceDirectory>${project.build.sourceDirectory}</sourceDirectory>
+                            <sourceDirectories>${project.build.sourceDirectory}</sourceDirectories>
                             <includeResources>true</includeResources>
                             <includeTestSourceDirectory>true</includeTestSourceDirectory>
                             <includeTestResources>true</includeTestResources>