mirrormanager: updated mirrorlist-server to 3.0.2

The testing of generate-mirrorlist-cache showed that private mirrors
where not part of the mirrorlist cache any more. Only private Internet2
mirrors where included in the cache.

This is fixed upstream in 3.0.2.

Signed-off-by: Adrian Reber <adrian@lisas.de>

roles/mirrormanager/backend/tasks/main.yml

@@ -154,7 +154,7 @@
 - name: checkout mirrorlist-server
   git:
     repo: https://github.com/adrianreber/mirrorlist-server.git
-    version: 3.0.1
+    version: 3.0.2
     dest: /srv/mirrorlist-server.git
   become: yes
   become_user: mirrormanager