[qa] Added commit message style check

Author: nemesifier

.travis.yml

@@ -26,6 +26,14 @@ before_script:
 
 script:
   - nosetests --with-coverage --cover-package=netjsonconfig
+  - |
+    if [ "$TRAVIS_PULL_REQUEST" != "false" ]; then
+      # gets commit message of last commit before pull request merge
+      COMMIT_MESSAGE=$(git log $TRAVIS_PULL_REQUEST_SHA --format=%B -n 1)
+      printf "Checking commit message:\n\n"
+      printf "$COMMIT_MESSAGE\n\n"
+      checkcommit --message "$COMMIT_MESSAGE"
+    fi
 
 after_success:
   coveralls

requirements-test.txt

@@ -5,3 +5,5 @@ isort
 flake8
 sphinx
 sphinx_rtd_theme
+# commit message style check
+openwisp-utils>=0.2.1