message: move the decryption to the sh script and out of before_install
diff: cp travis-utilities/.travis.settings.xml $HOME/.m2/settings.xml
  +openssl aes-256-cbc -K $encrypted_229149f15c3f_key -iv $encrypted_229149f15c3f_iv -in travis-utilities/keys.gpg.enc -out keys.gpg -d
  +
  gpg --fast-import keys.gpg
  shred keys.gpg
  