Configure the product release version using the galleon maven plugin

Wildfly galleon plugin creates some manifest files including the Product Release Name and Product Release Version. Since WFGP-18 was merged in wildfly, we are now able to configure in the plugin not only the product name, but also the version.

This issue will configure the Product Release Version via plugin configuration. It will allow setting a different value instead of the current one which is retrieved from the maven $project.version variable.