Merge pull request #397 from msheakoski/travis-symfony-4

Update Travis config to use Symfony 4 release

Author: makasim

Diff for: .travis.yml

@@ -20,7 +20,7 @@ matrix:
     - php: 7.0
       env: SYMFONY_VERSION=3.0.* UNIT_TESTS=true
     - php: 7.1
-      env: SYMFONY_VERSION=v4.0.0-BETA4 UNIT_TESTS=true
+      env: SYMFONY_VERSION=4.0.* UNIT_TESTS=true
     - php: 7.1
       env: SYMFONY_VERSION=3.4.* UNIT_TESTS=true
     - php: 7.2
@@ -37,7 +37,7 @@ matrix:
       env: SYMFONY_VERSION=3.3.* FUNCTIONAL_TESTS=true PREPARE_CONTAINER=true
     - php: 7.1
       services: docker
-      env: SYMFONY_VERSION=v4.0.0-BETA4 FUNCTIONAL_TESTS=true PREPARE_CONTAINER=true
+      env: SYMFONY_VERSION=4.0.* FUNCTIONAL_TESTS=true PREPARE_CONTAINER=true
     - php: 7.1
       services: docker
       env: SYMFONY_VERSION=3.3.* RDKAFKA_TESTS=true PREPARE_CONTAINER=true