Use unpooled netty allocator during tests.

Closes #2087

Author: mp911de

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>