CI Postgres 11

Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>

.drone.yml

@@ -775,6 +775,41 @@ trigger:
     - pull_request
     - push
 
+---
+kind: pipeline
+name: postgres11-php7.1
+
+steps:
+- name: submodules
+  image: docker:git
+  commands:
+    - git submodule update --init
+- name: postgres-php7.1
+  image: nextcloudci/php7.1:php7.1-16
+  commands:
+    - sleep 10 # gives the database enough time to initialize
+    - POSTGRES=11 NOCOVERAGE=true TEST_SELECTION=DB ./autotest.sh pgsql
+
+services:
+- name: cache
+  image: redis
+- name: postgres-11
+  image: postgres:11
+  environment:
+    POSTGRES_USER: oc_autotest
+    POSTGRES_DB: oc_autotest_dummy
+    POSTGRES_PASSWORD: owncloud
+  tmpfs:
+    - /var/lib/postgresql/data
+
+trigger:
+  branch:
+    - master
+    - stable*
+  event:
+    - pull_request
+    - push
+
 ---
 kind: pipeline
 name: mysqlmb4-php7.1