chore: ensure we can use the same collabora instance for multiple cloud instances

Signed-off-by: Bert-Jan Fikse <bert-jan@whatwedo.ch>

inventories/vagrant/host_vars/backend/collabora.yml

@@ -1,6 +1,15 @@
 collabora_domain: "office.local.test"
+collabora_ssl_verification: false
 
 # Allowed WOPI host domains
 collabora_allowed_domains:
   - "nextcloud.local.test"
-  - "opencloud.local.test"
+  - "wopi.opencloud.local.test"
+
+# Domains allowed to embed Collabora in an iframe
+collabora_frame_ancestors:
+  - "nextcloud.local.test"
+  - "opencloud.local.test"
+
+collabora_extra_hosts:
+  - "wopi.opencloud.local.test:host-gateway"