Fix missing library python-setuptools and libGLU1

.travis.yml

@@ -8,7 +8,7 @@ cache:
 
 before_install:
     - sudo apt-get update
-    - sudo apt-get install --no-install-recommends -y libsdl1.2debian python3-pip
+    - sudo apt-get install --no-install-recommends -y libsdl1.2debian libglu1 python3-pip python3-setuptools
     - sudo pip3 install -r requirements.txt
 
 install: