copr-builder: attempt to use ansible facts in when condition

roles/copr/backend/files/provision/builderpb_nova.yml

@@ -40,7 +40,6 @@
   vars:
     # pass this options if you need to create new base image from snapshot
     #prepare_base_image: True
-    env: {{ env }}
 
   tasks:
   - include: "provision_builder_tasks.yml"

roles/copr/backend/files/provision/provision_builder_tasks.yml

@@ -3,7 +3,7 @@
 
 - name: put infra stg repos into yum.repos.d if staging
   copy: src=files/dnf/infra-tags-stg.repo dest=/etc/yum.repos.d
-  when: env == "staging"
+  when: ansible_hostname == "copr-be-dev"
 
 - name: disable updates-testing
   file: