travis: add 'six' library, enable OVS tests

Because of travis environment updates, the 'six' library needs to
be installed explicitly now. This change broke the OVS tests, which
needed to be disabled temporarily.
For more information, see issue #140 on github.

Signed-off-by: Adrian Stratulat <adrian.stratulat91@gmail.com>

.travis-install.sh

@@ -5,6 +5,9 @@ sudo apt-get update
 sudo apt-get install makefs
 sudo apt-get install openjdk-7-jdk
 
+# ovs: build process requires 'six' module
+pip install six
+
 # Build and install rumprun toolchain from source
 RUMPRUN_PLATFORM=${RUMPRUN_PLATFORM:-hw}
 RUMPRUN_TOOLCHAIN_TUPLE=${RUMPRUN_TOOLCHAIN_TUPLE:-x86_64-rumprun-netbsd}

.travis.yml

@@ -49,8 +49,7 @@ env:
     - PACKAGE=apache2
     - PACKAGE=libffi
     - PACKAGE=openjdk8
-  # broken: issue #140
-  #  - PACKAGE=ovs
+    - PACKAGE=ovs
     - PACKAGE=zeromq
   #  - PACKAGE=servus
   #  - PACKAGE=zerobuf