relaxing constraint so that any 1.9 version of
MAAS can be installed.

Change-Id: Ic16540d612cbf42eed8eb361ebfb67e5a59a6af1
diff --git a/roles/maas/tasks/main.yml b/roles/maas/tasks/main.yml
index f9cae50..c6bde70 100644
--- a/roles/maas/tasks/main.yml
+++ b/roles/maas/tasks/main.yml
@@ -62,7 +62,7 @@
 - name: MAAS
   become: yes
   apt:
-    name: maas=1.9.3*
+    name: maas=1.9.*
     state: present
     force: yes
     update_cache: yes