Update Galaxy info.

.travis.yml

@@ -33,3 +33,6 @@ script:
   # Make sure Ansible is installed (yes, this is contrived, since Ansible was
   # already installed via pip earlier...).
   - "which ansible"
+
+notifications:
+  webhooks: https://galaxy.ansible.com/api/v1/notifications/

meta/main.yml

@@ -18,7 +18,7 @@ galaxy_info:
   - name: Ubuntu
     versions:
     - all
-  categories:
+  galaxy_tags:
     - system
     - packaging
     - development