add a travis_wait for python tests
add a travis_wait for python tests

cliqz/keyvi,hendrikmuhs/keyvi,hendrik-cliqz/keyvi,cliqz-oss/keyvi,narekgharibyan/keyvi,narekgharibyan/keyvi,cliqz/keyvi,cliqz/keyvi,hendrik-cliqz/keyvi,cliqz-oss/keyvi,narekgharibyan/keyvi,hendrikmuhs/keyvi,hendrikmuhs/keyvi,hendrik-cliqz/keyvi,cliqz-oss/keyvi,cliqz/keyvi,narekgharibyan/keyvi,hendrikmuhs/keyvi,cliqz-oss/keyvi,hendrik-cliqz/keyvi