Avoid overriding galleon pack properties when core-feature-pack-licenses.html is created

We generate the core-feature-pack-licenses.html at the provisioning level using the core-licenses.xsl stylesheet.

This stylesheet uses the environment property named 'version' to set the title of the html file generated by this task.

When this task is executed by the full distribution, the version value is overridden by the wildfl-full environment property.

We should avoid this property overridden to get the correct version in the core-feature-pack-licenses.html license file generated by wildfly-full (or by any other feature pack)