Concordion with Maven, using different folder for integration tests - maven

Question

I am trying to run integration tests (written in Concordion) using Maven 3.2.5. I have done the following.
Created a maven project using quickstart archetype.
Put my source code in src/main/java, unit test in src/test/java and integration
tests in src/spec/java.
Used maven-antrun-plugin to put integration test *.class in target/integrationtest-classes
Use maven-surefire-plugin to run the unit test cases.
Use maven-failsafe-plugin to run the integration test cases.
Finally run everything using "mvn clean install"
The problem is, while the unit test cases are running, the integration test cases are not. When I run the integration test cases from Eclipse, by running them as JUnit they run alright. However, when I run them from Maven, somehow only the unit test cases run. Can someone please help.
I am attaching my pom.xml here.
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.acme.bundler</groupId>
<artifactId>concordion</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>concordion</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<!-- Integration test. -->
<integrationSourceDirectory>src/spec/java</integrationSourceDirectory>
<integrationOutputDirectory>target/integrationtest-classes</integrationOutputDirectory>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>org.concordion</groupId>
<artifactId>concordion</artifactId>
<version>1.4.6</version>
</dependency>
</dependencies>
<build>
<pluginManagement>
<plugins>
<!-- Compile and run using jdk 1.7 -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.2</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
<executions>
<execution>
<phase>pre-integration-test</phase>
<goals>
<goal>testCompile</goal>
</goals>
<configuration>
<compilerArguments>
<d>${integrationOutputDirectory}</d>
</compilerArguments>
</configuration>
</execution>
</executions>
</plugin>
<!-- Run the main class of Java. -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2.1</version>
<executions>
<execution>
<goals>
<goal>java</goal>
</goals>
</execution>
</executions>
<configuration>
<mainClass>com.acme.bundler.concordion.App</mainClass>
<arguments>
<argument>foo</argument>
<argument>bar</argument>
</arguments>
</configuration>
</plugin>
<!-- The artefacts of integration tests need to move to a different folder
than the output of unit tests. -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
<version>1.8</version>
<executions>
<execution>
<id>create-directory</id>
<phase>pre-integration-test</phase>
<goals>
<goal>run</goal>
</goals>
<configuration>
<tasks>
<echo message="Creating Directory ${integrationOutputDirectory}" />
<mkdir dir="${integrationOutputDirectory}" />
</tasks>
</configuration>
</execution>
</executions>
</plugin>
<!-- Move the .class of the .java files in integration tests. <mkdir
dir="${itest.testOutputDirectory}" /> <move todir="${itest.testOutputDirectory}">
<fileset dir="${project.build.testOutputDirectory}"> <include name="**/*.class"
/> <present targetdir="${spec.testSourceDirectory}"> <mapper type="glob"
from="*.class" to="*.java" /> </present> </fileset> </move> -->
<!-- Surefire is designed to run the unit tests. If any of the tests
break the whole build breaks. -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.18.1</version>
<configuration>
<test>**/*.java</test>
</configuration>
</plugin>
<!-- Failsafe is designed to run integration tests. -->
<plugin>
<artifactId>maven-failsafe-plugin</artifactId>
<version>2.8</version>
<configuration>
<testClassesDirectory>${integrationOutputDirectory}</testClassesDirectory>
<reportsDirectory>${integrationOutputDirectory}/failsafe-reports</reportsDirectory>
<test>**/*.java</test>
</configuration>
<executions>
<execution>
<goals>
<goal>integration-test</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<version>1.7</version>
<executions>
<!-- Copy integration tests. -->
<execution>
<id>add-test-sources</id>
<phase>pre-integration-test</phase>
<goals>
<goal>add-test-source</goal>
</goals>
<configuration>
<sources>
<source>${integrationSourceDirectory}</source>
</sources>
</configuration>
</execution>
<execution>
<id>add-test-resources</id>
<phase>pre-integration-test</phase>
<goals>
<goal>add-test-resource</goal>
</goals>
<configuration>
<resources>
<resource>
<directory>${integrationSourceDirectory}</directory>
<targetPath>${integrationOutputDirectory}</targetPath>
</resource>
</resources>
</configuration>
</execution>
<execution>
<id>add-empty-directory</id>
<phase>pre-integration-test</phase>
<goals>
<goal>add-test-resource</goal>
</goals>
<configuration>
<resources>
<resource>
<directory>${integrationSourceDirectory}</directory>
<targetPath>${integrationOutputDirectory}</targetPath>
<excludes>
<exclude>**/*</exclude>
</excludes>
</resource>
</resources>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</pluginManagement>
</build>