Add CI test layouts

* Drop Wily from test matrix
* Replace the Wily cases dropped with extra cases to test separate
  roles deployment

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>

tests/cloud_playbooks/create-gce.yml

@@ -1,6 +1,6 @@
 ---
 - hosts: localhost
-  sudo: False
+  become: false
   gather_facts: no
   vars:
     cloud_machine_type: g1-small

tests/cloud_playbooks/delete-gce.yml

@@ -1,6 +1,6 @@
 ---
 - hosts: localhost
-  sudo: False
+  become: false
   gather_facts: no
   vars:
     cloud_machine_type: f1-micro