completed ansible galaxy meta data

meta/main.yml

@@ -2,9 +2,10 @@
 galaxy_info:
   author: Martin Pietsch <martin.pietsch@tu-dresden.de>
   description: This role installs, enables and configures
-               the PHP module `<module>`.
+               the PHP module `pdo`. It is the base of all
+               POD roles.
   company: Technische Universität Dresden
-  role_name: package_lang_php_module_<module>
+  role_name: package_lang_php_module_pdo
   namespace: sdm
   license: BSD-3-Clause
   min_ansible_version: 2.10