Merge pull request #57 from simonjbeaumont/reorder-travis-tests

travis: Run static analysis before tests

Author: simonjbeaumont

.travis.yml

@@ -7,7 +7,7 @@ install:
   - wget https://raw.githubusercontent.com/ocaml/ocaml-travisci-skeleton/master/.travis-opam.sh
   - pip install --user flake8
 script:
-  - bash -ex .travis-opam.sh
   - flake8 --show-source --show-pep8 python
+  - bash -ex .travis-opam.sh
 env:
   - OCAML_VERSION=4.02 PACKAGE=xapi-storage