Add support for Postgres 11

roles/matrix-server/tasks/setup/setup_postgres.yml

@@ -33,6 +33,11 @@
     matrix_postgres_docker_image_to_use: "{{ matrix_postgres_docker_image_v9 }}"
   when: "pg_version.startswith('9.')"
 
+- name: Determine Postgres version to use (use 10.x, if detected)
+  set_fact:
+    matrix_postgres_docker_image_to_use: "{{ matrix_postgres_docker_image_v10 }}"
+  when: "pg_version == '10' or pg_version.startswith('10.')"
+
 - debug:
     msg: "NOTE: Your setup is on an old Postgres version ({{ matrix_postgres_docker_image_to_use }}), while {{ matrix_postgres_docker_image_latest }} is supported. You can upgrade using --tags=upgrade-postgres"
   when: "matrix_postgres_docker_image_to_use != matrix_postgres_docker_image_latest"

roles/matrix-server/tasks/upgrade_postgres.yml

@@ -60,10 +60,18 @@
     matrix_postgres_docker_image_to_use: "{{ matrix_postgres_docker_image_v9 }}"
   when: "pg_version.startswith('9.')"
 
+- name: Determine Postgres version to use (use 10.x, if detected)
+  set_fact:
+    matrix_postgres_docker_image_to_use: "{{ matrix_postgres_docker_image_v10 }}"
+  when: "pg_version == '10' or pg_version.startswith('10.')"
+
 - name: Abort, if already at latest Postgres version
-  fail: msg="You are already running the latest Postgres version supported. Nothing to do"
+  fail: msg="You are already running the latest Postgres version supported ({{ matrix_postgres_docker_image_latest }}). Nothing to do"
   when: "matrix_postgres_docker_image_to_use == matrix_postgres_docker_image_latest"
 
+- debug:
+    msg: "Upgrading database from {{ matrix_postgres_docker_image_to_use }} to {{ matrix_postgres_docker_image_latest }}"
+
 - name: Ensure matrix-synapse is stopped
   service: name=matrix-synapse state=stopped