add matrix homeserver playbook

matrix.yaml

@@ -0,0 +1,19 @@
+---
+- hosts: biff
+  roles:
+    - role: lxc_guest
+      vm_name: matrix
+      distro: sid
+    - role: ssh_server
+      ansible_connection: lxc_ssh
+      ansible_docker_extra_args: matrix
+- hosts: matrix
+  roles:
+    - role: dns_record
+    - role: reverse_proxy
+  tasks:
+    - name: Install synapse
+      apt:
+        name: "{{ item }}"
+      with_items:
+        - matrix-synapse