Fetch ansible-role-coturn from MASH project

Signed-off-by: Suguru Hirahara <did🔑z6MkvVZk1A3KBApWJXv2Ju4H14ErDfRGxh8zxdXSZ4vACDg5>

requirements.yml

@@ -12,6 +12,10 @@
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-container-socket-proxy.git
   version: v0.4.2-1
   name: container_socket_proxy
+- src: git+https://github.com/mother-of-all-self-hosting/ansible-role-coturn.git
+  version: v4.8.0-1
+  name: coturn
+  activation_prefix: coturn_
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-ddclient.git
   version: v4.0.0-0
   name: ddclient