Fix kolla-ansible role tests

The kolla-ansible CLI now requires the kolla_ansible python module to be
importable. We need to activate the virtualenv to make this work.

Change-Id: I43d4761409df3eea146dc7ff16b4c8d80855a91b

ansible/roles/kolla-ansible/tests/test-defaults.yml

@@ -35,7 +35,7 @@
             kolla_openstack_logging_debug: False
 
         - name: Verify kolla-ansible installation
-          command: "{{ temp_path }}/venv/bin/kolla-ansible -h"
+          shell: ". {{ temp_path }}/venv/bin/activate && kolla-ansible -h"
           changed_when: False
 
         - name: Verify ansible installation

ansible/roles/kolla-ansible/tests/test-extras.yml

@@ -181,7 +181,7 @@
             kolla_nova_compute_ironic_host: "controller1"
 
         - name: Verify kolla-ansible installation
-          command: "{{ temp_path }}/venv/bin/kolla-ansible -h"
+          shell: ". {{ temp_path }}/venv/bin/activate && kolla-ansible -h"
           changed_when: False
 
         - name: Verify ansible installation