Move repository specific profiles to pom.xml

These belong to pom.xml, settings.xml should not be required to build jbehave.

To quote the Maven reference (http://maven.apache.org/settings.html): "The settings element in the settings.xml file contains elements used to define values which configure Maven execution in various ways, like the pom.xml, but should not be bundled to any specific project, or distributed to an audience."

Forcing a settings.xml will doom developers who require a workstation specific settings.xml (what settings.xml is for), e.g. corporate proxy settings.