[constellation] Keep constellation up to date

Signed-off-by: Yohann D'ANELLO <ynerant@crans.org>

roles/constellation-front/tasks/main.yml

@@ -39,6 +39,7 @@
   pip:
     name:
       - git+https://gitlab.adm.crans.org/nounous/constellation.git[front]
+    state: latest
 
 - name: Install uWSGI
   apt:

roles/constellation/tasks/main.yml

@@ -69,11 +69,12 @@
     version: "{{ constellation.version }}"
     recursive: true
 
-- name: Install constellation (production)
+- name: Install and upgrade constellation (production)
   when: constellation.version == "master"
   pip:
     name:
       - git+https://gitlab.adm.crans.org/nounous/constellation.git
+    state: latest
 
 - name: Set owner of cloned project
   when: constellation.version != "master"