[BUG] - dh-file parameter is missing in turnserver.conf.j2

[vlasov01]

Hi,

Thank you a lot of building this ansible role!

Describe the bug

Turn log generates error message "Bad configuration format: /etc/dhparam.pem"
I think the template turnserver.conf.j2 is missing this parameter .
The workaround is manualy modify /etc/turnserver.conf and add replace /etc/dhparam.pem with dh-file=/etc/dhparam.pem

To Reproduce
Steps to reproduce the behavior:

1. Build/start
   ansible localhost -m include_role -a name=ebbba.coturn

2. See error"0: Bad configuration format: /etc/dhparam.pem" in /var/log/turnserver/

Expected behavior
No error should be generated

Screenshots
Ubuntu 20.04.5 LTS (GNU/Linux 5.4.0-125-generic x86_64)

Ansible version

ansible --version
ansible [core 2.13.4]
  config file = /etc/ansible/ansible.cfg
  configured module search path = ['/root/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /root/.local/lib/python3.8/site-packages/ansible
  ansible collection location = /root/.ansible/collections:/usr/share/ansible/collections
  executable location = /root/.local/bin/ansible
  python version = 3.8.10 (default, Jun 22 2022, 20:18:18) [GCC 9.4.0]
  jinja version = 3.1.2
  libyaml = True

Your variables for this role - be sure to remove any sensitive information
coturn_user_quota=5
coturn_total_quota=200
ansible_os_family=debian