copr-builder: install infra-tags-stg on staging builders

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

@@ -40,6 +40,7 @@
   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/files/dnf/infra-tags-stg.repo

@@ -0,0 +1,6 @@
+[infrastructure-tags-stg]
+name=Fedora Infrastructure staging tag $releasever - $basearch
+baseurl=https://kojipkgs.fedoraproject.org/repos-dist/f$releasever-infra-stg/latest/$basearch/
+enabled=1
+gpgcheck=1
+gpgkey=https://infrastructure.fedoraproject.org/repo/infra/RPM-GPG-KEY-INFRA-TAGS

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

@@ -1,7 +1,9 @@
 - name: put infra repos into yum.repos.d
-  copy: src=files/dnf/{{ item }} dest=/etc/yum.repos.d
-  with_items:
-    - infra-tags.repo
+  copy: src=files/dnf/infra-tags.repo dest=/etc/yum.repos.d
+
+- 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"
 
 - name: disable updates-testing
   file: