fix tests.

Author: makasim

pkg/amqp-ext/.travis.yml

@@ -16,7 +16,7 @@ cache:
 install:
     - php Tests/fix_composer_json.php
     - composer self-update
-    - composer install
+    - composer install --ignore-platform-reqs # AMQP 1.9.3 ext is not in the distro repos.
 
 script:
     - vendor/bin/phpunit --exclude-group=functional