Add git status output to debug git fetch failures

Signed-off-by: Daan Hoogland <daan@onecht.net>

This closes #523

tools/travis/before_install.sh

@@ -49,6 +49,9 @@ javac -version
 echo -e "\nMaven Version: "
 mvn -v
 
+echo -e "\nCheck Git status"
+git status
+
 echo -e "\nUpdating the system: "
 sudo apt-get -q -y update > /dev/null