BAP-12423: Public travis does not work because require composer asset…

…s plugin

- update config and deps

.travis.yml

@@ -21,10 +21,15 @@ before_script:
   - phpenv config-rm xdebug.ini
   - phpenv config-add travis.php.ini
   - composer self-update
+  - composer config minimum-stability dev
+  - composer config prefer-stable true
   - composer config repositories.oro composer https://packagist.orocrm.com
+  - composer require --no-update --dev "phpunit/phpunit:5.7.*"
+  - composer require --no-update --dev "squizlabs/php_codesniffer:2.7.*"
+  - composer require --no-update --dev "phpmd/phpmd:2.5.*"
   - composer global show fxp/composer-asset-plugin 1.2.2 || composer global require fxp/composer-asset-plugin:1.2.2
   - travis_wait composer update --prefer-dist --optimize-autoloader --no-interaction  --no-suggest --prefer-stable
-  - DIFF=$(git diff --name-only --diff-filter=ACMR $TRAVIS_COMMIT_RANGE | grep -e ".*\.php$")
+  - set +e; DIFF=$(git diff --name-only --diff-filter=ACMR $TRAVIS_COMMIT_RANGE | grep -e ".*\.php$"); set -e;
 
 script:
   - ./vendor/bin/phpunit