Removed JVM process forking and increase max heap size for test stability

Author: hhandoko

pom.xml

@@ -197,9 +197,9 @@
                 <version>2.19.1</version>
                 <!-- NOTE: Configuration as per http://stackoverflow.com/a/33757854 -->
                 <configuration>
-                    <forkCount>3</forkCount>
+                    <forkCount>1</forkCount>
                     <reuseForks>true</reuseForks>
-                    <argLine>-Xmx1024m -XX:MaxPermSize=256m</argLine>
+                    <argLine>-Xmx2048m -XX:MaxPermSize=512m</argLine>
                 </configuration>
                 <executions>
                     <execution>