Archetype build fails when using non-default settings.xml location - Add profile for getting started test project

When building the archetype project a 'getting started' test project is always created. This uses a Ant runner that executes maven which fails when the hippo.snapshots settings are not in the default location, e.g. passing the settings.xml location as parameter.
Put the getting-started generation in it's own profile so it is optional
Alternative is to use the archetype:integration-test to create the test project
see:
http://maven.apache.org/archetype/maven-archetype-plugin/integration-test-mojo.html

Needs backported to 7.9.

Needs not to be backported to 7.8, 7.7
Alternative/ work around for previous versions is to add a property/parameter to pass the settings.xml location