Create a /mtn/koji symlink on all our staging builders.

roles/koji_builder/tasks/main.yml

@@ -163,6 +163,12 @@
   tags:
   - koji_builder
 
+- name: make a mnt/koji link
+  file: state=link src=/mnt/fedora_koji dest=/mnt/koji
+  when: "'builders-stg' in group_names"
+  tags:
+  - koji_builder
+
 # mock configs for pungify job
 - name: put extra special  mock configs in
   copy: src=builders/{{ item }} dest="/etc/mock/{{ item }}" mode=644