templates: Use become: no in playbooks by default.

ansible-freeipa modules should work without superuser privileges in
most cases, and to reflect this, the module tests should avoid using
`become: yes`.

This PR change the test playbook templates to use `become: no` by
default, so only modules that require superuser privileges will need
to change this variable.

utils/templates/module-member-present.yml.in

@@ -1,7 +1,7 @@
 ---
 - name: ${name^} member present example
   hosts: ipaserver
-  become: true
+  become: no
 
   tasks:
   - name: Ensure $name NAME is present