Implement Ability to deploy OpenStack services via Ansible Kolla using ProxySQL over TLS connection

[fdobrovolny]

Epic #462

As an SCS Operator, I want to be able to deploy OpenStack services with MariaDB thurgh ProxySQL as their database over TLS so that I can have E2E encrypted communication between OpenStack services.

Definition of Ready:

• [ ] User Story is clear and understood by the whole team
• [ ] Acceptance criteria are defined
• [ ] Acceptance criteria are clear and understood by the whole team

Definition of Done:

• [ ] Ansible Kolla is able to deploy OpenStack services with connection to MariaDB through ProxySQL as their database over TLS
• [ ] The patch has been submitted to upstream and merged.
• [ ] Change has been included in the testbed.
• [ ] CI tests have run successfully
• [ ] Documentation has been updated
• [ ] Release Notes have been updated

[fdobrovolny]

As Ansible Kolla uses ProxySQL the same as HTTP services use HAProxy for their traffic this task was edited to be more specific to the part of implementation in question.

[MatusJenca2]

Upstream PR: https://review.opendev.org/c/openstack/kolla-ansible/+/909912