Set running_env for CI

server_environment module requires this key in config.

.travis.yml

@@ -40,6 +40,8 @@ install:
   - git clone --depth=1 https://github.com/OCA/maintainer-quality-tools.git ${HOME}/maintainer-quality-tools
   - export PATH=${HOME}/maintainer-quality-tools/travis:${PATH}
   - travis_install_nightly
+  # Requirements to test server_environment modules
+  - printf '[options]\n\nrunning_env = dev\n' > ${HOME}/.openerp_serverrc
 
 script:
   - travis_run_tests