Use ansible internal tools to generate random name

cloud/ansible/openstack/roles/deploy/tasks/main.yaml

@@ -1,6 +1,6 @@
-- name: Create T-Pot name
-  shell: echo t-pot-ansible-$(pwgen -ns 6 -1)
-  register: tpot_name
+- name: Generate T-Pot name
+  set_fact:
+    tpot_name: "t-pot-ansible-{{ lookup('password', '/dev/null chars=ascii_lowercase,digits length=6') }}"
 
 - name: Create security group
   os_security_group: