PHP-FPM: Add a test for failing to load dynamic modules

php/fpm/tests.yml

@@ -1,6 +1,11 @@
 schemaVersion: '2.0.0'
 
 commandTests:
-  - name: 'check configuration'
+  - name: 'check fpm configuration'
     command: "sh"
     args: ["-c", "mkdir /data/app && php-fpm --test"]
+
+  - name: 'check for unloaded modules'
+    command: "sh"
+    args: ["-c", "php -i | grep 'Unable to load dynamic library'"]
+    exitCode: 1