SGF-491 - Post-release cleanup.

src/test/resources/org/springframework/data/gemfire/config/local-ns.xml

@@ -14,6 +14,7 @@
 		<prop key="name">LocalNamespaceConfig</prop>
 		<prop key="mcast-port">0</prop>
 		<prop key="log-level">warning</prop>
+		<prop key="off-heap-memory-size">64m</prop>
 	</util:properties>
 
 	<gfe:cache properties-ref="gemfireProperties"/>

src/test/resources/org/springframework/data/gemfire/config/partitioned-ns.xml

@@ -16,6 +16,7 @@
 		<prop key="name">PartitionedNamespaceConfig</prop>
 		<prop key="mcast-port">0</prop>
 		<prop key="log-level">warning</prop>
+		<prop key="off-heap-memory-size">64m</prop>
 	</util:properties>
 
 	<util:properties id="props">

src/test/resources/org/springframework/data/gemfire/config/replicated-ns.xml

@@ -16,6 +16,7 @@
 		<prop key="name">ReplicatedNamespaceConfig</prop>
 		<prop key="mcast-port">0</prop>
 		<prop key="log-level">warning</prop>
+		<prop key="off-heap-memory-size">64m</prop>
 	</util:properties>
 
 	<gfe:cache properties-ref="gemfireProperties"/>