Add suds to prerequisites.

git-svn-id: https://humgenprojects.lumc.nl/svn/mutalyzer/trunk@519 eb6bd6ab-9ccd-42b9-aceb-e2899b4a52f1

extras/pre-install.sh

@@ -31,6 +31,7 @@ apt-get install -y \
   python-configobj \
   python-simpletal \
   python-soappy \
+  python-suds \
   python-magic \
   python-psutil \
   python-xlrd \