Update logger, metrics, and redis

Also fix acceptance tests, broken by a change in the redis driver
behaviour. It now returns promises from most operations, which confuses mocha.

services/document-updater/docker-compose.yml

@@ -1,18 +1,19 @@
 # This file was auto-generated, do not edit it directly.
 # Instead run bin/update_build_scripts from
 # https://github.com/sharelatex/sharelatex-dev-environment
-# Version: 1.1.12
+# Version: 1.1.21
 
 version: "2"
 
 services:
   test_unit:
-    build: .
+    image: node:6.9.5
     volumes:
       - .:/app
     working_dir: /app
     environment:
       MOCHA_GREP: ${MOCHA_GREP}
+      NODE_ENV: test
     command: npm run test:unit
     user: node
 
@@ -27,6 +28,8 @@ services:
       MONGO_HOST: mongo
       POSTGRES_HOST: postgres
       MOCHA_GREP: ${MOCHA_GREP}
+      LOG_LEVEL: ERROR
+      NODE_ENV: test
     user: node
     depends_on:
       - mongo
@@ -49,3 +52,4 @@ services:
   mongo:
     image: mongo:3.4
 
+