ELNBuildSync: rework variable locations

Instead of having foo: and foo_stg: variables with ternary() selections
based on environment, take a cue from Koschei and use two variable files
in the role, selected by environment name.

rh-pre-commit.version: 2.4.0
rh-pre-commit.check-secrets: ENABLED

playbooks/openshift-apps/elnbuildsync.yml

@@ -29,8 +29,9 @@
   vars_files:
     - /srv/web/infra/ansible/vars/global.yml
     - /srv/private/ansible/vars.yml
-    - /srv/web/infra/ansible/vars/apps/elnbuildsync.yml
     - /srv/web/infra/ansible/vars/{{ ansible_distribution }}.yml
+    - /srv/web/infra/ansible/roles/openshift-apps/elnbuildsync/vars/main.yml
+    - /srv/web/infra/ansible/roles/openshift-apps/elnbuildsync/vars/{{ env }}.yml
 
   roles:
   - role: rabbit/user