Add unicode integration tests to be run in travis

.travis.yml

@@ -25,6 +25,6 @@ script:
 - if test x"$TOXENV" != x'py24' ; then tox ; fi
 - if test x"$TOXENV" = x'py24' ; then python2.4 -V && python2.4 -m compileall -fq -x 'module_utils/(a10|rax|openstack|ec2|gce).py' lib/ansible/module_utils ; fi
   #- make -C docsite all
-- if test x"$INTEGRATION" = x'yes' ; then source ./hacking/env-setup && cd test/integration/ && make test_var_precedence ; fi
+- if test x"$INTEGRATION" = x'yes' ; then source ./hacking/env-setup && cd test/integration/ && make test_var_precedence && make unicode ; fi
 after_success:
   - coveralls