Extract datasource configuration

Extract the datasource configuration from the EAR file.

1.1 - Remove these properties of persistence.xml (and hibernate.cfg.xml if exists):
            <property name="hibernate.connection.url" value="${jdbc.connection.url}"/>
            <property name="hibernate.connection.username" value="${jdbc.user}"/>
            <property name="hibernate.connection.password" value="${jdbc.password}"/>
            <property name="hibernate.connection.provider_class" value="org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider"/>
1.2 - Add this property to persistence.xml (and hibernate.cfg.xml if exists):
             <property name="hibernate.connection.datasource" value="JBOSS/DATASOURCE/PATH"/>
JBOSS/DATASOURCE/PATH is the jndi-name defined in the datasource configuration file.

2 - Create zip containing the datasource file:
  2.1 - In the pom.xml file of the ear, if the maven-assembly-plugin is set, add
<descriptor>src/main/assembly/datasource.xml</descriptor>
 otherwise add the plugin :
                        <plugin>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.2.1</version>
<configuration>
<descriptors>
<descriptor>src/main/assembly/datasource.xml</descriptor>
</descriptors>
</configuration>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
  2.2 - Create the 'src/main/assembly' folder if doesn't exist and create the datasource.xml file into this folder with the following content:
<assembly xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0 http://maven.apache.org/xsd/assembly-1.1.0.xsd">
    <id>datasource</id>
    <baseDirectory>/</baseDirectory>
    <formats>
        <format>zip</format>
    </formats>
    <fileSets>
        <fileSet>
            <directory>src/main/datasource</directory>
            <outputDirectory>/</outputDirectory>
        </fileSet>
    </fileSets>
</assembly>
  2.3 - Create the folder 'src/main/datasource' and move the datasource configuration file from 'src/main/application/META-INF' to 'src/main/datasource'