ops(iac): improve Openstack Docker terraform example

feat(iac): Generate portainer password

feat(iac): Split docker example into two folders

feat(iac): Allow any flavour in openstack compute

fix(iac): Pin portainer version

Author: alhendrickson

deployment/terraform/modules/openstack-cogstack-infra/cloud-init-controller.yaml

@@ -34,7 +34,6 @@ runcmd:
   - docker pull portainer/portainer-ce:2.33.0
   - docker network create portainer-network 
   - docker volume create portainer-data
-  - echo "Admin password is ${PORTAINER_ADMIN_PASSWORD} - ok?"
   - |
     docker run -d \
       --name portainer \