minor symfony#10950 Fixed the Travis build to avoid exiting too early (stof)

This PR was squashed before being merged into the 2.3 branch (closes symfony#10950).

Discussion
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Fixed the Travis build to avoid exiting too early

currently, failed tests on Travis are exiting the build too early, avoiding to run some tests and maybe even loosing some output. See travis-ci/travis-ci#2346 for more details

Commits
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2e64fb1 Fixed the Travis build to avoid exiting too early

Author: fabpot

.travis.yml

@@ -27,5 +27,5 @@ before_script:
     - wget https://phar.phpunit.de/phpunit.phar && rm `which phpunit` && sudo cp phpunit.phar /usr/local/bin/phpunit && sudo chmod +x /usr/local/bin/phpunit
 
 script:
-    - ls -d src/Symfony/*/* | parallel --gnu --keep-order 'echo "Running {} tests"; phpunit --exclude-group tty,benchmark {};' || exit 1
+    - ls -d src/Symfony/*/* | parallel --gnu --keep-order 'echo "Running {} tests"; phpunit --exclude-group tty,benchmark {};' || false
     - echo "Running tests requiring tty"; phpunit --group tty