add osx_image to keys-map
add osx_image to keys-map

travis-ci/travis-web,travis-ci/travis-web,travis-ci/travis-web,2947721120/travis-web,fotinakis/travis-web,fotinakis/travis-web,2947721120/travis-web,fauxton/travis-web,fauxton/travis-web,2947721120/travis-web,fotinakis/travis-web,travis-ci/travis-web,fotinakis/travis-web,fauxton/travis-web,2947721120/travis-web,fauxton/travis-web