set default shell for airflow user

scripts/cloudinit.yml

@@ -45,11 +45,13 @@ users:
   - name: airflow
     gecos: Common user for running the airflow services
     groups: sudo, docker
+    shell: /bin/bash
     sudo: ALL=(ALL) NOPASSWD:ALL
     lock_passwd: true
     ssh_authorized_keys:
       - ssh-rsa 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 service@gitlab
       - ssh-rsa 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 service@gitlab
+
 write_files:
   - path: /etc/docker/daemon.json
     permission: 0744