Maven Producing Empty jar for UIAutomatorTestcase

Am trying to build an android UIAutomatorTestcase. Since there is a need to merge two xml files inside my testcase, i have to use a thirdparty jar which has its own dependencies. I tried to build the AutomatorTestcase using maven. When i execute the below command,

mvn clean install

the jar that gets generated does not have the classes.dex files in it and has pom.xml , pom.properties file.

The class AutomatorTest is inside src/main/java/com.example.uiautomator.

Can anyone tell me whats wrong in the pom.xml?

My Pom.xml

<?xml version="1.0" encoding="UTF-8"?>

http://ift.tt/IH78KX xmlns:xsi="http://ift.tt/ra1lAU" xsi:schemaLocation="http://ift.tt/IH78KX http://ift.tt/VE5zRx">

<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>uiautomatortest</artifactId>
<packaging>jar</packaging>
<version>0.0.1</version>
<name>UiAutomatorExample</name>
<description>To try uiautomator testcase</description>

<repositories>
    <repository>
        <snapshots>
            <enabled>false</enabled>
        </snapshots>
        <releases>
            <enabled>true</enabled>
        </releases>
        <id>el4jReleaseRepositoryExternal</id>
        <name>External release repository of the EL4J project</name>
        <url>http://public-el4.elca-services.ch/el4j/maven2repository</url>
    </repository>

    <repository>
        <id>collectionspace-remote-repos</id>
        <name>collectionspace-remote-repos</name>
        <url>http://source.collectionspace.org:8081/artifactory/remote-repos</url>
        <snapshots>
            <enabled>false</enabled>
        </snapshots>
    </repository>
</repositories>
<dependencies>
    <dependency>
        <groupId>com.google.android</groupId>
        <artifactId>android-test</artifactId>
        <version>4.1.1.4</version>
    </dependency>

    <dependency>
        <groupId>android.test.uiautomator</groupId>
        <artifactId>uiautomator</artifactId>
        <version>4.4.2_r3</version>
        <scope>system</scope>
        <systemPath>D:\Softwares\AndroidStudio\sdk\platforms\android-19\uiautomator.jar</systemPath>
    </dependency>

    <!-- EL4J core module. -->
    <dependency>
        <groupId>ch.elca.el4j.modules</groupId>
        <artifactId>module-core</artifactId>
        <version>3.1</version>
        <scope>provided</scope>
    </dependency>
    <!-- EL4J jmx support -->
    <dependency>
        <groupId>ch.elca.el4j.modules</groupId>
        <artifactId>module-jmx</artifactId>
        <version>3.1</version>
        <scope>provided</scope>

    </dependency>

    <dependency>
        <groupId>ch.elca.el4j.modules</groupId>
        <artifactId>module-xml_merge-common</artifactId>
        <version>3.1</version>
        <scope>provided</scope>
    </dependency>

    <dependency>
        <groupId>com.google.android</groupId>
        <artifactId>android-test</artifactId>
        <version>4.1.1.4</version>
        <scope>provided</scope>
    </dependency>

    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.1</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>commons-io</groupId>
        <artifactId>commons-io</artifactId>
        <version>2.0.1</version>
        <scope>provided</scope>
    </dependency>
</dependencies>

<build>
    <finalName>${project.artifactId}</finalName>
    <sourceDirectory>src.main.java</sourceDirectory>
    <pluginManagement>
        <plugins>
            <plugin>
                <groupId>com.jayway.maven.plugins.android.generation2</groupId>
                <artifactId>android-maven-plugin</artifactId>
                <version>3.1.1</version>
                <extensions>true</extensions>
                <configuration>
                    <sdk>
                        <path>${env.ANDROID_HOME}</path>
                        <platform>19</platform>
                    </sdk>
                    <push>
                        <source>${project.build.directory}/${project.artifactId}-${project.version}.jar</source>
                        <destination>/data/local/tmp/</destination>
                    </push>

                    <attachJar>false</attachJar>
                    <dex>
                    </dex>
                    <test>
                        <createReport>true</createReport>
                    </test>
                    <proguard>
                        <skip>true</skip>
                    </proguard>
                    <uiautomator>
                        <skip>false</skip>
                        <testClassOrMethods>
                            <testClassOrMethod>com.example.uiautomatortest.AutomatorTest</testClassOrMethod>
                            <testClassOrMethod>com.example.uiautomatortest.AutomatorTest#testDemo()</testClassOrMethod>
                        </testClassOrMethods>
                        <createReport>true</createReport>
                    </uiautomator>
                </configuration>
                <executions>
                    <execution>
                        <id>install-jar-to-device</id>
                        <phase>install</phase>
                        <goals>
                            <goal>push</goal>
                        </goals>
                    </execution>
                    <execution>
                        <id>dex-classes</id>
                        <phase>prepare-package</phase>
                        <goals>
                            <goal>dex</goal>
                        </goals>
                    </execution>
                    <execution>
                        <id>ui-test</id>
                        <phase>install</phase>
                        <goals>
                            <goal>uiautomator</goal>
                        </goals>
                    </execution>

                </executions>
            </plugin>

            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
            </plugin>

            <plugin>
                <artifactId>maven-jar-plugin</artifactId>
                <configuration>
                    <classesDirectory>${project.build.directory}/</classesDirectory>
                    <includes>
                        <include>classes.dex</include>
                    </includes>
                </configuration>
            </plugin>

        </plugins>
    </pluginManagement>

</build>