Use unpooled netty allocator during tests.

Closes #2087

pom.xml

@@ -191,6 +191,11 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-surefire-plugin</artifactId>
+				<configuration>
+					<systemProperties>
+						<io.netty.allocator.type>pooled</io.netty.allocator.type>
+					</systemProperties>
+				</configuration>
 				<executions>
 					<execution>
 						<id>default-test</id>
@@ -211,6 +216,11 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-failsafe-plugin</artifactId>
+				<configuration>
+					<systemProperties>
+						<io.netty.allocator.type>pooled</io.netty.allocator.type>
+					</systemProperties>
+				</configuration>
 				<executions>
 					<execution>
 						<id>default-test</id>