Add git branch.

Author: matthias_schaub

ansible/playbook.yml

@@ -7,5 +7,6 @@
       git:
         repo: 'https://github.com/mapswipe/python-mapswipe-workers.git'
         dest: /home/mapswipe/python-mapswipe-workers
+        version: dev
     - name: Rebuild and restart Docker container usind Docker-Compose.
       script: /home/mapswipe/python-mapswipe-worker/deploy.sh