fix(tests): fix Travis logging

docker-compose.test-e2e.yml

@@ -5,6 +5,8 @@ services:
   api:
     environment:
     - DESECSTACK_E2E_TEST=TRUE # increase abuse limits and such
+    logging:
+      driver: "json-file"
 
   nslord:
     networks:
@@ -12,9 +14,13 @@ services:
         ipv4_address: ${DESECSTACK_IPV4_REAR_PREFIX16}.0.129 # make nslord available for test-e2e
     environment:
     - DESECSTACK_NSLORD_CACHE_TTL=0
+    logging:
+      driver: "json-file"
 
   static:
     build: test/e2e/mock-static # build a mock static to save time executing tests
+    logging:
+      driver: "json-file"
 
   test-e2e:
     build: test/e2e
@@ -41,3 +47,5 @@ services:
     - "update.dedyn.${DESECSTACK_DOMAIN}:${DESECSTACK_IPV4_REAR_PREFIX16}.0.128"
     - "www.dedyn.${DESECSTACK_DOMAIN}:${DESECSTACK_IPV4_REAR_PREFIX16}.0.128"
     - "www.desec.${DESECSTACK_DOMAIN}:${DESECSTACK_IPV4_REAR_PREFIX16}.0.128"
+    logging:
+      driver: "json-file"