Bundle deployment in JBoss ON fails because ant file is not found in bundle

Environment

• Red Hat JBoss Operations Network (JON) 3.2.x
• Bundle zip file contains three files:
  • deploy.xml
  • postinstall.xml
  • jboss-eap-6.2.0.zip
• The deploy.xml file is using postinstall.xml file in the postinstallTarget like:

<?xml version="1.0"?>

<project name="jboss-as-bundle-deploy" default="main" xmlns:rhq="antlib:org.rhq.bundle">
    <rhq:bundle name="JB62"
                version="2.2"
                description="a bundle to drop down a default install of Jboss EAP 6.2.0 - Install symlinks">

        <rhq:deployment-unit name="appserver"
                             compliance="full"
                             preinstallTarget="appserver-preinstall"
                             postinstallTarget="appserver-postinstall"
                             manageRootDir="false">

            <rhq:archive name="jboss-eap-6.2.0.zip" exploded="true"/>
        </rhq:deployment-unit>
    </rhq:bundle>
    <target name="main"/>
    <target name="appserver-preinstall">
        <echo>Installing My Application to ${rhq.deploy.dir}...</echo>
        <rhq:audit status="SUCCESS" action="My App Pre Install" info="my app installing to ${rhq.deploy.dir}" />
    </target>
    <target name="appserver-postinstall">
        <ant antfile="postinstall.xml" target="jb26-post-install" />
    </target>
</project>