Incompatibities with Velocity in Archetypes

Hello, 

I am having an issue caused by the new version of the maven-archetype-plugin:3.3.0 related with the recent upgrade of velocity 1.7 to velocity 2.3.

As it is reported in the Velocity configuration, from version 1.7 to version 2+, the use of hyphens have changed and now they are not supported in parameters, causing errors.

To avoid this, there is a property that allow backwards compatibility detailed here, but I believe there is no way to tell maven-archetype-plugin to allow this compatibility in the configuration.

I have a very complex project that uses hyphens in multiple instances and now, it is impossible to generate a project with the new archetype:3.3.0 version.

My problem is that changing the hyphen will cause a major impact in some other projects that rely on this archetype, so it is not a viable option for me to do.

Could it be possible for you to include a way to modify Velocity configuration in maven-archetype-plugin:3.3.0? This would be extremely helpful so we can keep up with the future updates

Thanks in advance!