Fix compatibility issues with ansible 2.2.0.0

Change-Id: I2acc56daec1777727945c9171a1775246bd52afd
diff --git a/roles/ansible/tasks/main.yml b/roles/ansible/tasks/main.yml
index faffdd1..10a5293 100644
--- a/roles/ansible/tasks/main.yml
+++ b/roles/ansible/tasks/main.yml
@@ -6,5 +6,5 @@
 - name: Ensure Ansible
   become: yes
   apt:
-    name=ansible=2.1.2.*
+    name=ansible=2.2.*
     state=present