seems that the geotools.version (and other) properties are not set in the main pom (https://github.com/openplans/OpenTripPlanner/blob/master/pom.xml). Probably the hudson builder is using variables coming from the settings.xml.
Try defining it manually:
mvn install integration-test -DskipTests -Pinteractive -Dgeotools.version=9.1 -Dspring.version=3.1.1.RELEASE