Auto merge of #1691 - sgrif:sg-pg-11, r=jtgeibel

Change Travis to PG 11

Been testing against 11 locally for a while, but figured we should get a
travis run on this

Author: bors

.travis.yml

@@ -1,6 +1,6 @@
 language: rust
 sudo: required
-dist: trusty
+dist: xenial
 
 # Ignore this branch per bors-ng documentation
 branches:
@@ -24,8 +24,11 @@ env:
     # on community-submitted PRs
     - PERCY_TOKEN=0d8707a02b19aebbec79bb0bf302b8d2fa95edb33169cfe41b084289596670b1
     - PERCY_PROJECT=crates-io/crates.io
+    - PGPORT=5433
 
 install:
+  - sudo cp /etc/postgresql/10/main/pg_hba.conf /etc/postgresql/11/main/pg_hba.conf
+  - sudo systemctl restart postgresql@11-main
   - script/ci/cargo-clean-on-new-rustc-version.sh
   - cargo install --force diesel_cli --vers `cat .diesel_version` --no-default-features --features postgres && export PATH=$HOME/.cargo/bin:$PATH
 
@@ -34,7 +37,11 @@ before_script:
 
 addons:
   chrome: stable
-  postgresql: "9.5"
+  postgresql: "11"
+  apt:
+    packages:
+      - postgresql-11
+      - postgresql-client-11
 
 matrix:
   fast_finish: true