Update .travis for speed up Jython tests (robotframework#1146)

* Update .travis for speed up Jython tests Originally from mihaiparvu/SSHLibrary@293ad27 Fixes robotframework#1145

Author: aaltat

.travis.yml

@@ -73,16 +73,10 @@ before_script:
  - "export DISPLAY=:99.0"
  - "sh -e /etc/init.d/xvfb start"
  - if [ "$JYTHON" == "true" ]; then
- hg clone http://hg.python.org/jython;
- cd jython;
- ant;
- cd ..;
- chmod +x "$(pwd)/jython/dist/bin/jython";
- export INTERPRETER="$(pwd)/jython/dist/bin/jython";
- alias jython="$(pwd)/jython/dist/bin/jython";
- export PATH="$(pwd)/jython/dist/bin:$PATH";
- wget --no-verbose https://bootstrap.pypa.io/3.2/get-pip.py;
- $INTERPRETER get-pip.py;
+ wget -O jython.jar http://search.maven.org/remotecontent?filepath=org/python/jython-installer/2.7.1/jython-installer-2.7.1.jar;
+ java -jar jython.jar -s -d ~/jython;
+ export PATH="~/jython/bin:$PATH";
+ export INTERPRETER=~/jython/bin/jython;
  fi
  - python -m pip install robotstatuschecker
  - echo $INTERPRETER